TPI go fast tips and tricks?
#301
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Re: TPI go fast tips and tricks?
Aftermarket chips allow for stock O2 correction, there really isn't much they can do VE wise. Stock bins have have total timing at 30* to 28* SA depending on the injection system, and once you see CTS temps reach over 150 degrees nearing Closed Loop enable, there is an additional amount of timing taken out at wide open throttle dependent on IAT and CTS data. Bottom line, you can advance your distributor by hand a few degrees and run your stock chip at a cold temperature, say 80 degrees. Then compare it to the Hypertech at fully warmed up. No difference whatsoever. That's what those chips do, more spark advance, and less timing pull, at normal operating temperature. If you're a tuner, you can burn a chip to do the exact same thing...
As for Ray Jr, I just caught your response from what Fast355 quoted. Here's a tip. In reference to your hero, any fool can slap a turbo onto an engine, or tune an engine, what matters is that the engine lives and can still be used as an example as viable proof. Where is it? As for your engine, well, lets just say I don't blame the setup. All the best...
- Rob
As for Ray Jr, I just caught your response from what Fast355 quoted. Here's a tip. In reference to your hero, any fool can slap a turbo onto an engine, or tune an engine, what matters is that the engine lives and can still be used as an example as viable proof. Where is it? As for your engine, well, lets just say I don't blame the setup. All the best...
- Rob
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Re: TPI go fast tips and tricks?
Aftermarket chips allow for stock O2 correction, there really isn't much they can do VE wise. Stock bins have have total timing at 30* to 28* SA depending on the injection system, and once you see CTS temps reach over 150 degrees nearing Closed Loop enable, there is an additional amount of timing taken out at wide open throttle dependent on IAT and CTS data. Bottom line, you can advance your distributor by hand a few degrees and run your stock chip at a cold temperature, say 80 degrees. Then compare it to the Hypertech at fully warmed up. No difference whatsoever. That's what those chips do, more spark advance, and less timing pull, at normal operating temperature. If you're a tuner, you can burn a chip to do the exact same thing...
As for Ray Jr, I just caught your response from what Fast355 quoted. Here's a tip. In reference to your hero, any fool can slap a turbo onto an engine, or tune an engine, what matters is that the engine lives and can still be used as an example as viable proof. Where is it? As for your engine, well, lets just say I don't blame the setup. All the best...
- Rob
As for Ray Jr, I just caught your response from what Fast355 quoted. Here's a tip. In reference to your hero, any fool can slap a turbo onto an engine, or tune an engine, what matters is that the engine lives and can still be used as an example as viable proof. Where is it? As for your engine, well, lets just say I don't blame the setup. All the best...
- Rob
#303
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Re: TPI go fast tips and tricks?
That is correct! The Stage 2 had more timing and the primary fan was designed to turn on at the matching cooler temperature. Finally they also suggested a low temperature fan switch for the secondary fan. Octane requirements linearly increase with coolant temperature for the same timing advance and same compression ratio. By increasing timing and not lowering the operating temperature, the Stage 2 would show horrible timing retard.
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Re: TPI go fast tips and tricks?
That is correct! The Stage 2 had more timing and the primary fan was designed to turn on at the matching cooler temperature. Finally they also suggested a low temperature fan switch for the secondary fan. Octane requirements linearly increase with coolant temperature for the same timing advance and same compression ratio. By increasing timing and not lowering the operating temperature, the Stage 2 would show horrible timing retard.
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Re: TPI go fast tips and tricks?
It still had timing changes, mostly in the lower engine speeds at WOT as well as VE and PE air/fuel ratio changes. That being said the Stage 1 had noticeably less timing increases than the Stage 2.
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Re: TPI go fast tips and tricks?
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Re: TPI go fast tips and tricks?
The only MAF car I have played with was a 1985. I repinned and rewired the harness to run a 1989 165' ecm and eliminated the MAF burnoff module. Doing this also allow me to remove the cold start injector and sensor. Then later when the MAF went bad, I removed it, replaced the boot with a SD intake boot, mounted a MAP sensor to the firewall on a TBI MAP sensor bracket and hooked up the MAP sensor to the intake. Repinned the ECM harness to match a Holden 808 ECM and ran the SD V8 808 ECM Holden code in the 165' ECM. IIRC it is $12P code
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Re: TPI go fast tips and tricks?
The only MAF car I have played with was a 1985. I repinned and rewired the harness to run a 1989 165' ecm and eliminated the MAF burnoff module. Doing this also allow me to remove the cold start injector and sensor. Then later when the MAF went bad, I removed it, replaced the boot with a SD intake boot, mounted a MAP sensor to the firewall on a TBI MAP sensor bracket and hooked up the MAP sensor to the intake. Repinned the ECM harness to match a Holden 808 ECM and ran the SD V8 808 ECM Holden code in the 165' ECM. IIRC it is $12P code
#309
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Re: TPI go fast tips and tricks?
Same here.. I used to run that Hypertech Thermomaster chip with a 160 thermostat back in the 90s..
Not sure if it did much.. I think the fan came on sooner.. Maybe you’d notice more with an automatic.
That car did run way cooler than my bone stock 88..
Not sure if it did much.. I think the fan came on sooner.. Maybe you’d notice more with an automatic.
That car did run way cooler than my bone stock 88..
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Re: TPI go fast tips and tricks?
I've had one in my black '89 since...around '89. I got tired of having it run at 220* all the time. Between the chip and the 160* thermostat, it's hard to get it over 180*. Also apropos to this thread, my '89 has most of the free/cheap mods of the era and it runs much stronger than it did bone stock.
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Re: TPI go fast tips and tricks?
I never did a before and after Dyno or track run with my 87, but when stock I’d race an L98 and my nose would be at his rear wheel. After I did some of these hacks with exhaust and a hollowed cat he’d consistently be at my rear wheel. Once I spent some more money I pulled ahead more, but the stupid hacks seemed to work. I never started going to the track until the car was pretty fast and people would say to bring it and see what it does so I couldn’t compare the difference each stage of mods would make.
I dont know know that I could feel the difference but it was nice to edge out an L98. It took a little more money to feel a real difference.
I had a friend with a white G92 and he would do all kinds of stuff to his car and tell me what he’d run after doing heads, cam, injectors, ignition, plug gaps, wires, etc.. I would just pick and choose what was working for him.. He got a little crazy with taking seats out and stuff, but I drew the line..
I wouldn’t do most of the stuff I did to my 87 to my 88.. I do want a cooler Thermostat and replacing a PROM chip wouldn’t be bad.
Back then I always heard get the air in faster, exhaust out quicker, and keep the engine cooler, get good tires and performance will improve..
A lot of my crazy tuner friends had cars that never ran right so I was always wary of getting in too deep over my head..
I dont know know that I could feel the difference but it was nice to edge out an L98. It took a little more money to feel a real difference.
I had a friend with a white G92 and he would do all kinds of stuff to his car and tell me what he’d run after doing heads, cam, injectors, ignition, plug gaps, wires, etc.. I would just pick and choose what was working for him.. He got a little crazy with taking seats out and stuff, but I drew the line..
I wouldn’t do most of the stuff I did to my 87 to my 88.. I do want a cooler Thermostat and replacing a PROM chip wouldn’t be bad.
Back then I always heard get the air in faster, exhaust out quicker, and keep the engine cooler, get good tires and performance will improve..
A lot of my crazy tuner friends had cars that never ran right so I was always wary of getting in too deep over my head..
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Re: TPI go fast tips and tricks?
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Re: TPI go fast tips and tricks?
The Stealth Ram Graph is the first picture. 1991Z28
Just going to Stealth Ram without changing anything else. Look at where the peak power had changed.
This is a Dyno with a Stock powered Super Ram with a TPIS ZZ9 Cam, AFR 180’s Heads, 358cu, T5 Trans and 3.42 gears.
This is a Dyno with a Stock powered Super Ram with a TPIS ZZ9 Cam, AFR 180’s Heads, 358cu, T5 Trans and 3.42 gears.
#314
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Re: TPI go fast tips and tricks?
Valve events play a key factor as well. You can install an HSR on an otherwise bone stock L98 and see the RPM band rise because of the increased plenum volume, but then you can also run the correct valve events on an otherwise stock TPI L98 and get similar results, with overlap and rough idle being the byproduct of course, but that is just the way it is. It was mentioned above that although my TPI 305 may rev to 6000-RPM, that the RPM isn't that usable, but this is being said without knowing my valve events, nor my injector size, it was just being based on Tuned Port Injection. My lift is relatively low, but my duration is very wide. Stuffing in a roller camshaft with increased lift is more than doable, and will gain more usable RPM up to 6000, but I chose my camshaft for a reason. RPM was never the point because I am running a turbo, but the TPI will rev as high as I need it to, and if you think (not you Vince, I'm speaking in General), if you think boosted pressure at 6000-RPM isn't "usable" with TPI, then, well, it's kinda moot on my part to even argue...
- Rob
- Rob
#315
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Re: TPI go fast tips and tricks?
what Fast355 quoted. Here's a tip. In reference to your hero, any fool can slap a turbo onto an engine, or tune an engine, what matters is that the engine lives and can still be used as an example as viable proof. Where is it? As for your engine, well, lets just say I don't blame the setup. All the best...
Ok...i had enough
street lethal... i got 100$ says your car put on the dyno doesnt make power you think it does and doesnt hold power to 6000.
Put up or stfu. You run your dumb mouth for years with no results. I try to be helpful and tolerant of your ignorance but its clear to me that you dont know what you are doing. Finish your car for once. Put up the results like i have. How many slips or vids do i gotta post to be considered proof??? How many dyno sheets do i need to show you? All the while you have jack shyt.
didnt know about timing being pulled at high coolant temps and iat’s??? Man thats tuning 101, how you not realize that. No wonder you aint gonna put a turbo on it, it will never run. Pop the bottom end in first hit. Hit me up if you wanf it tuned to work
as for ray’s build, it still runs and runs well. Idk what more proof you want
#316
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Re: TPI go fast tips and tricks?
I beg to differ in opinon. I have run stock runners, ASM oversize and Siamese ported SLPs on multiple setups on the dyno. On a Vortec 305 with ported heads that had 1.94/1.60 valves installed, a factory 203/210 @ .050 LT4 cam and 1.6 rockers the stock runners will level off in the 5,600 rpm range but the HP will stay completely flat all the way to 6,500+. On a 350 the stock runners will stay flat until 5,800-6,000 rpm. The ASM runners will move the peak upward from 4,800-5,000 up to about 5,200-5,400 and the power will stay flat until 6,200 rpm. The Siamese runners will trade some low-end torque and the peak moved up to 5,600-5,800 rpm and the power stayed flat until past fuel cut-off. I had a ported 3817 base, Siamese ported SLPs, fully ported plenum on a 10.5:1 vortec head 383 with a small 214/218 @ .050 on a 114 LSA roller cam that made peak HP at 5,600 and had a flat HP peak from 5,600-6,200 rpm. 380 RWHP AND 450 RWTQ OUT OF THAT ONE
I have a 1987 Firebird I recently setup with a 10:1 355, LT4 Hotcam, Stock SD TPI system, LT1 injectors, tuned by me with my Autoprom, 1 3/4" primary shorty headers, dual 2.5" exhaust with a X-pipe, custom CAI, 4th gen cooling fans, and 170*F thermostat. The engine is backed to a TH400 with 2,800 rpm stall 9.5" converter and a 9-bolt limited slip 2.77 rear end. The car launches hard and the engine has ZERO difficulty pulling to the 5,800 rpm shift points. The car has run a best pass at full weight of 8.20 @ 85 mph in the 1/8th in 2,800 DA NO LESS with the stock intake base, stock runners and a plenum with the egr diffusers ported out.. The power in this car peaks at 5,200 and stays completely flat up until the ecm fuel kill at 5,800. From what I remember while tuning the car runs 2,500 rpm @ 75 mph on the highway, the owner is getting about 26 mpg with lean cruise enabled @ 16.5:1 air/fuel ratio and 52* of timing. This car on a conservative street tune made 280 RWHP through the TH400 with its loose converter on 91 octane at 12:1 air/fuel ratio and 32* total timing. I have since retuned the car to bring it up to about 13.2:1 air/fuel ratio and 34* total timing which it responded noticeably too. Even before the retune based on the previous track times and my track experience with cooler weather, in good weather this car would run 7.90s @ 88+ mph in good weather and that is good for a mid 12s 1/4 mile run.
I have a 1987 Firebird I recently setup with a 10:1 355, LT4 Hotcam, Stock SD TPI system, LT1 injectors, tuned by me with my Autoprom, 1 3/4" primary shorty headers, dual 2.5" exhaust with a X-pipe, custom CAI, 4th gen cooling fans, and 170*F thermostat. The engine is backed to a TH400 with 2,800 rpm stall 9.5" converter and a 9-bolt limited slip 2.77 rear end. The car launches hard and the engine has ZERO difficulty pulling to the 5,800 rpm shift points. The car has run a best pass at full weight of 8.20 @ 85 mph in the 1/8th in 2,800 DA NO LESS with the stock intake base, stock runners and a plenum with the egr diffusers ported out.. The power in this car peaks at 5,200 and stays completely flat up until the ecm fuel kill at 5,800. From what I remember while tuning the car runs 2,500 rpm @ 75 mph on the highway, the owner is getting about 26 mpg with lean cruise enabled @ 16.5:1 air/fuel ratio and 52* of timing. This car on a conservative street tune made 280 RWHP through the TH400 with its loose converter on 91 octane at 12:1 air/fuel ratio and 32* total timing. I have since retuned the car to bring it up to about 13.2:1 air/fuel ratio and 34* total timing which it responded noticeably too. Even before the retune based on the previous track times and my track experience with cooler weather, in good weather this car would run 7.90s @ 88+ mph in good weather and that is good for a mid 12s 1/4 mile run.
#317
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Re: TPI go fast tips and tricks?
Fast forwarding to 2000, I read a “custom” $400 chip from Jet that the guy I bought my old IROC from was running. While ultimately his fault, Jet had not even changed the “stock” 18# injector constant for the 26# injectors and he kept running it until it washed the cylinder walls down. The only things that were changed were the on/off temps for the fans and the timing had been bumped little. According to other’s I’ve spoken to with much more experience in programming chips than me (including what Fast355 has said), that seems about par for most of the name brand chips and some have told me they’ve even seen some cheap rip-offs that were totally blank..
Anyway, since the hack and equipment is available now to burn your own (along with the support from this and other boards),,, you are MUCH better off investing that money to burn your own chips. I know it can seem a little intimidating at first but once you take the plunge, it’s not that bad at all – just a little time consuming.
#319
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Re: TPI go fast tips and tricks?
Heres a TPI that pulls to 6600rpms.
https://youtu.be/nyK8j8y2c8o
https://youtu.be/nyK8j8y2c8o
#320
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Re: TPI go fast tips and tricks?
The only “back in the day” experience I had with chips was back in 1986 - my 85SS was used in Hypertech’s R&D of their 1985 up chip for the Monte Carlo SS. Long story short, my stock chip with the base timing set at 10-degrees ran the same as the best time with their chip once we brought the base timing back down to 6-degrees. I asked the guy riding along during the testing if they were doing anything other than bumping up the timing. He reluctantly said, “No, but don’t let Mark (Heffington – the owner) know I said that”. He did go on to say that they could do a little more with the EFI cars (he wouldn’t say what) but had to keep things rather generic due to the one-fit-all approach they had to take.
Fast forwarding to 2000, I read a “custom” $400 chip from Jet that the guy I bought my old IROC from was running. While ultimately his fault, Jet had not even changed the “stock” 18# injector constant for the 26# injectors and he kept running it until it washed the cylinder walls down. The only things that were changed were the on/off temps for the fans and the timing had been bumped little. According to other’s I’ve spoken to with much more experience in programming chips than me (including what Fast355 has said), that seems about par for most of the name brand chips and some have told me they’ve even seen some cheap rip-offs that were totally blank..
Anyway, since the hack and equipment is available now to burn your own (along with the support from this and other boards),,, you are MUCH better off investing that money to burn your own chips. I know it can seem a little intimidating at first but once you take the plunge, it’s not that bad at all – just a little time consuming.
Fast forwarding to 2000, I read a “custom” $400 chip from Jet that the guy I bought my old IROC from was running. While ultimately his fault, Jet had not even changed the “stock” 18# injector constant for the 26# injectors and he kept running it until it washed the cylinder walls down. The only things that were changed were the on/off temps for the fans and the timing had been bumped little. According to other’s I’ve spoken to with much more experience in programming chips than me (including what Fast355 has said), that seems about par for most of the name brand chips and some have told me they’ve even seen some cheap rip-offs that were totally blank..
Anyway, since the hack and equipment is available now to burn your own (along with the support from this and other boards),,, you are MUCH better off investing that money to burn your own chips. I know it can seem a little intimidating at first but once you take the plunge, it’s not that bad at all – just a little time consuming.
Last edited by chazman; 08-11-2018 at 10:08 PM.
#321
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Re: TPI go fast tips and tricks?
Thanks! I'm just very curious at what the tuning changes actually are. Like I said, I put a Hypertech Stage 2 chip in simply for earlier fan temp and if there were any ignition/fuel improvements, I considered that a bonus. But with the Stage 2 chip, my base timing is at, IIRC, 11 degrees. I had it as advanced at about 14 degrees, but as I mentioned earlier, got wheel hop and backed it off and the wheel hop went away. I did most of the free/cheap mods back in the day on my '89, and except for one G92 L98 and one '92 1LE B4C, I can't remember a stockish 3rd gen which felt faster to me - and I've driven many dozens.
The main problem with the TPI is the base. Even the after market base doesn’t flow much better even though it flows 240cfms. That’s why the HP stops around 45-4700rpms. A long time ago I had my Big Mouth Base Extrude Honed and flowed 260cfms which allowed maximum HP to move up to 5200. Then with a few more tricks to the base, got it to flow 290cfms. Here are the results.
This car has the same setup as mine at the time but with AFR’s195 and the manifold flowed 320cfms.
#323
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Re: TPI go fast tips and tricks?
Interesting Vincent, but I'm not sure I understand how your post relates to mine.
I'll add these tidbits, though. GM states that an L98 cammed, N10, LB9, doesn't even hit peak horsepower until 4600 RPM. That's 200 RPM higher than an L98 cammed single cat LB9 or any L98,( with single or dual cats), and a whopping 600 RPM higher than a peanut cammed, single cat LB9.
So a dual cat, L98 cammed, LB9 is a bit more "revvy" than any of the other TPI combos and I'd go so far to say, has a different personality.
I can't copy the page for some reason, go about halfway down for GM's own power team spec form. https://www.gmheritagecenter.com/doc...let-Camaro.pdf
I'll add these tidbits, though. GM states that an L98 cammed, N10, LB9, doesn't even hit peak horsepower until 4600 RPM. That's 200 RPM higher than an L98 cammed single cat LB9 or any L98,( with single or dual cats), and a whopping 600 RPM higher than a peanut cammed, single cat LB9.
So a dual cat, L98 cammed, LB9 is a bit more "revvy" than any of the other TPI combos and I'd go so far to say, has a different personality.
I can't copy the page for some reason, go about halfway down for GM's own power team spec form. https://www.gmheritagecenter.com/doc...let-Camaro.pdf
#324
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Re: TPI go fast tips and tricks?
Interesting Vincent, but I'm not sure I understand how your post relates to mine.
I'll add these tidbits, though. GM states that an L98 cammed, N10, LB9, doesn't even hit peak horsepower until 4600 RPM. That's 200 RPM higher than an L98 cammed single cat LB9 or any L98,( with single or dual cats), and a whopping 600 RPM higher than a peanut cammed, single cat LB9.
So a dual cat, L98 cammed, LB9 is a bit more "revvy" than any of the other TPI combos and I'd go so far to say, has a different personality.
I can't copy the page for some reason, go about halfway down for GM's own power team spec form. https://www.gmheritagecenter.com/doc...let-Camaro.pdf
I'll add these tidbits, though. GM states that an L98 cammed, N10, LB9, doesn't even hit peak horsepower until 4600 RPM. That's 200 RPM higher than an L98 cammed single cat LB9 or any L98,( with single or dual cats), and a whopping 600 RPM higher than a peanut cammed, single cat LB9.
So a dual cat, L98 cammed, LB9 is a bit more "revvy" than any of the other TPI combos and I'd go so far to say, has a different personality.
I can't copy the page for some reason, go about halfway down for GM's own power team spec form. https://www.gmheritagecenter.com/doc...let-Camaro.pdf
#325
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Re: TPI go fast tips and tricks?
You can point to restrictions everywhere in the system, I'm still not sure if we are talking about the same topic, though.
Last edited by chazman; 08-13-2018 at 09:05 AM.
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Axle/Gears: 3:42 Auburn
Re: TPI go fast tips and tricks?
Bingo! He would completely be wasting his time, as well as devaluing his third gen. I just don't understand what some of our members are thinking when they mention mods like that, it does absolutely nothing. I have taken my GTA down the track with no hood at all, and the ET and trap speed remained the same, so guys looking to cut their hoods to draw in more air are just wasting their time. If people want results,I mean real results, then put your money where it counts. Stall speed converter if it's an automatic w/TPI and around 2400 stall (stock couples at 1500-RPM), gears, camshaft, and tune. You will feel one hell of a difference without the need of ruining your F-Body with little gimmicks that..... do..... not.... work. Here's a tip guys, the reason why "cold" is good is because of the bin, timing get's retarded when increased temps are detected when feedback is being looped, this is why Open Loop drives so much better than Closed Loop, it's in the tune. It's amusing when members can drive to the store on a hot day, shut the engine off for a minute or two to grab something, come back in, start it up and she pulls very good, gets to nearest stop light a few minutes later, someone pulls up wanting to play, light turns green, your F-Body feels like it is running slower, and they immediately tell themselves it's because it is hot. It's not that. It's the bin. The difference in Injector Duty Cycle between ambient temperature and an IAT reading of 125 degrees is not as much as you may think, and if IAT temps bother you, then simply invest in a bird caged IAT sensor from a V6 and relocate it before the throttle body. Or, just change it in the tune and keep your stock heat soaked CTS posing as an IAT, makes no damn difference.
- Rob.
- Rob.
I have a Hypertech 121342 chip, 180 t stat, TB bypass, Cut air box w/ K&n filters, stock exhaust minus cat with a Flowmaster muffler.. The car runs @ 180 on the button. The temp will increase to 210=220 with the A/C on running in traffic in the hot Florida summer. When this happens the **** dyno really feels the power loss.
#328
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: TPI go fast tips and tricks?
If you are careful, you can cut open or grind off 2 sides of the solid brass temp sensors and use those. Same thing inside of them.
#329
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Join Date: May 2005
Location: Ohio
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Car: 1992 Trans Am
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPI go fast tips and tricks?
Guys,
I just picked up a 1991 Trans Am, R6P, T5, 3.42 dual cat 305 car.
I, too, want to grab a quick 100RWHP for under 200 bucks, with no nitrous. Is there a "double secret, double deadly" hacksaw trick for my car?
Thanks in advance, can't wait to annihilate an LS1 after a trip to Lowes!!!!
I just picked up a 1991 Trans Am, R6P, T5, 3.42 dual cat 305 car.
I, too, want to grab a quick 100RWHP for under 200 bucks, with no nitrous. Is there a "double secret, double deadly" hacksaw trick for my car?
Thanks in advance, can't wait to annihilate an LS1 after a trip to Lowes!!!!
#330
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Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: TPI go fast tips and tricks?
Guys,
I just picked up a 1991 Trans Am, R6P, T5, 3.42 dual cat 305 car.
I, too, want to grab a quick 100RWHP for under 200 bucks, with no nitrous. Is there a "double secret, double deadly" hacksaw trick for my car?
Thanks in advance, can't wait to annihilate an LS1 after a trip to Lowes!!!!
I just picked up a 1991 Trans Am, R6P, T5, 3.42 dual cat 305 car.
I, too, want to grab a quick 100RWHP for under 200 bucks, with no nitrous. Is there a "double secret, double deadly" hacksaw trick for my car?
Thanks in advance, can't wait to annihilate an LS1 after a trip to Lowes!!!!
#331
Supreme Member
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Join Date: Dec 2001
Location: Chicagoland
Posts: 9,666
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376 Posts
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: TPI go fast tips and tricks?
Guys,
I just picked up a 1991 Trans Am, R6P, T5, 3.42 dual cat 305 car.
I, too, want to grab a quick 100RWHP for under 200 bucks, with no nitrous. Is there a "double secret, double deadly" hacksaw trick for my car?
Thanks in advance, can't wait to annihilate an LS1 after a trip to Lowes!!!!
I just picked up a 1991 Trans Am, R6P, T5, 3.42 dual cat 305 car.
I, too, want to grab a quick 100RWHP for under 200 bucks, with no nitrous. Is there a "double secret, double deadly" hacksaw trick for my car?
Thanks in advance, can't wait to annihilate an LS1 after a trip to Lowes!!!!
#333
Junior Member
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Join Date: May 2005
Location: Ohio
Posts: 78
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Car: 1992 Trans Am
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPI go fast tips and tricks?
I'll tell you about a buddy that picked up 65RWHP with Lucas products some other time......
#334
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: TPI go fast tips and tricks?
I use synthetics for durability in my stuff. From engine oil, trans fluid, differential oil, wheel bearing grease, etc. Cannot say that I gained any noticeable power but you can easily tell the before and after difference in parasitic loss from the increased MPG and just from the fact the vehicle rolls more easily at speed. Acceleration times at speed were noticeably reduced and the engine works much less at highway speed. I also had a dragging caliper once from the slide pins being rusty and seizing. The calipers were old and the pistons were sticky in them. I replaced the calipers with GM low-drag calipers and the master cylinder with a quick take up style from a later model in addition I used synthetic caliper grease on the slide pins, swapped in new rotors that were not warped and new pads. The new calipers/master cylinder allow the pads to withdraw from the rotors eliminating constant frictional drag.
Point I am making is maintenance issues on a vehicle this old can drastically effect how the vehicle runs and performs. How many 3 ton brick shaped vehicles do you know that still get 18-19 mpg running 70+ mph?
Last edited by Fast355; 08-14-2018 at 11:31 AM.
#335
Junior Member
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Join Date: May 2005
Location: Ohio
Posts: 78
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Car: 1992 Trans Am
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPI go fast tips and tricks?
HAHAHAHA!
I use synthetics for durability in my stuff. From engine oil, trans fluid, differential oil, wheel bearing grease, etc. Cannot say that I gained any noticeable power but you can easily tell the before and after difference in parasitic loss from the increased MPG and just from the fact the vehicle rolls more easily at speed. Acceleration times at speed were noticeably reduced and the engine works much less at highway speed. I also had a dragging caliper once from the slide pins being rusty and seizing. The calipers were old and the pistons were sticky in them. I replaced the calipers with GM low-drag calipers and the master cylinder with a quick take up style from a later model in addition I used synthetic caliper grease on the slide pins, swapped in new rotors that were not warped and new pads. The new calipers/master cylinder allow the pads to withdraw from the rotors eliminating constant frictional drag.
Point I am making is maintenance issues on a vehicle this old can drastically effect how the vehicle runs and performs. How many 3 ton brick shaped vehicles do you know that still get 18-19 mpg running 70+ mph?
I use synthetics for durability in my stuff. From engine oil, trans fluid, differential oil, wheel bearing grease, etc. Cannot say that I gained any noticeable power but you can easily tell the before and after difference in parasitic loss from the increased MPG and just from the fact the vehicle rolls more easily at speed. Acceleration times at speed were noticeably reduced and the engine works much less at highway speed. I also had a dragging caliper once from the slide pins being rusty and seizing. The calipers were old and the pistons were sticky in them. I replaced the calipers with GM low-drag calipers and the master cylinder with a quick take up style from a later model in addition I used synthetic caliper grease on the slide pins, swapped in new rotors that were not warped and new pads. The new calipers/master cylinder allow the pads to withdraw from the rotors eliminating constant frictional drag.
Point I am making is maintenance issues on a vehicle this old can drastically effect how the vehicle runs and performs. How many 3 ton brick shaped vehicles do you know that still get 18-19 mpg running 70+ mph?
I think if you add Lucas products to your maintenance schedule, you can pick up 36-41MPG, and at least 65-100RWHP. Definitely worth a look!
#336
Re: TPI go fast tips and tricks?
Ok...i had enough
street lethal... i got 100$ says your car put on the dyno doesnt make power you think it does and doesnt hold power to 6000.
Put up or stfu. You run your dumb mouth for years with no results. I try to be helpful and tolerant of your ignorance but its clear to me that you dont know what you are doing. Finish your car for once. Put up the results like i have. How many slips or vids do i gotta post to be considered proof??? How many dyno sheets do i need to show you? All the while you have jack shyt.
didnt know about timing being pulled at high coolant temps and iat’s??? Man thats tuning 101, how you not realize that. No wonder you aint gonna put a turbo on it, it will never run. Pop the bottom end in first hit. Hit me up if you wanf it tuned to work
as for ray’s build, it still runs and runs well. Idk what more proof you want
#338
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Car: Teal 92 Z28
Engine: 5.7
Transmission: 700r4
Axle/Gears: 3.73
Re: TPI go fast tips and tricks?
This may be quite trivial for you guys but when we were doing the major tune up after purchase it was recommended that I put 21lb Bosch injectors in..... so I did. Is this a bad thing with having everything stock except no egr, A.I.R system, cats, and a 3 Inch magnaflow from the Ypipe? All plugs, wires, cap n rotor are O.E.M, thanks!
#339
Re: TPI go fast tips and tricks?
1990 l98 g92 n10 car 13.6 with sh!ty edelbrock headers lol, K&N's hacksawed air filter base even more lol, 3 inch single in single out super deltaflow muffler good tune up and gas, no runners no base no porting no cam no converter, and no suspension with crappy goodyears, yeah it was a nice cool day and the track was plenty sticky, oh yeah and I can drive, my buddy's mustang had every bolt on and a 100 shot and they thought I was spraying..
Last edited by Rocnation81; 09-15-2018 at 03:44 PM.
#341
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Car: 1990 G92 IROC Z Miniram
Engine: 388cu 6.4 Liters
Transmission: G-Force T5
Axle/Gears: 3.73 Gears
Re: TPI go fast tips and tricks?
Last edited by VincentZ28; 09-15-2018 at 03:49 PM.
#342
Re: TPI go fast tips and tricks?
13.6 at 101mph usually consistent, fastest ever was 13.57 with pulley change. I beat a slow ls1 by default before and can be ahead of most of them until a lil past the1/8
#346
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Car: 1990 G92 IROC Z Miniram
Engine: 388cu 6.4 Liters
Transmission: G-Force T5
Axle/Gears: 3.73 Gears
Re: TPI go fast tips and tricks?
You mean the 90-92 L98’s are quicker than the 87-89 L98. But I think some 89’s L98 G92 N10 had flat top pistons as well. The 90 IROC was the platform for the 91-92 Z28 as far as Horsepower, performances and interior changes. The same goes for the T/A.
#348
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: TPI go fast tips and tricks?
I know the later 92 TPIs that have the newer oil pan (indentation for lt1 oil level sensor but not punched), black valve covers, textured runners and blank tb plate have powdered metal rods and the lighter LT1 pistons. Not sure if they are true flattops or not tho.
#349
Junior Member
Re: TPI go fast tips and tricks?
My '91 does in fact have flat tops.....made by Mahle no less!
Last edited by auto_god; 09-17-2018 at 06:21 AM.