805camaro805

Like it says, I have a 91 rs camaro 5.0 v8 and want to chip it. I was thinking of the stage 2 chip from jet. Anyone have any experience with these, and where do they go?


Also are the new pulleys any good? The ones from mach

tony_cogliandro

iTrader: (3)

if you want a good chip go to a place and have them make it for your car. dont buy aftermarket over the counter stuff.
if you were in cal i would tell you to call kevin but if you are not then find a good chip maker in your area.

805camaro805

Im in california. How much does it cost?

89RsPower!

A good question to ask would be what do you hope to accomplish with a chip? On an otherwise stock car even a custom chip isn't going to magically unlock gobs of power... Underdrive pulleys also won't... so back to the question what are you trying to accomplish? If this is a bone stock car the best place to start hp per $ wise would be a decent set of headers and a good cat back system. But that brings us back to my question.. what are you trying to accomplish?

805camaro805

I want to increase my horsepower and mpg. Mostly horespower.

Just got a k&n air filter hopefully that will do something. Also going to grab a throttle body flow booster by jet

Kevin91Z

iTrader: (1)

I'm the Kevin he is talking about, but I dont do TBI chips anymore, as my source of blank chips dried up, and they're too much of a pain in the butt.

You can accomplish 90% of what an aftermarket chip does for you by advancing your distributor from 0* initial to 6* initial (remember to put it back to 0* for the emissions test), and installing a 160* thermostat and 185-200* fan switch.
Those aftermarket chips from JET or Hypertech are mostly hype. They're not allowed to change any of the idle fuel or timing, so they just add a bunch of fuel and timing at wide open throttle and turn the fans on at a lower temperature.

805camaro805

http://www.performancechipsdirect.com/Chevy/Camaro/ what about these?

Kevin91Z

iTrader: (1)

Ed Wright at http://www.fastchip.com/

and

http://www.tbichips.com/ are the ones I trust.

89RsPower!

You may notice a gain from the K&N if you needed a new air filter. Those type of air filters don't actually add any horsepower, they simply out perform a standard paper filter once both are dirty. A new paper filter and a new K&n will flow about the same. Like Kevin explained above off the shelf aftermarket chips are basically a waste of money. The only way to go with a chip is a custom burn, but it's kind of a waste of good money on a bone stock engine.

805camaro805

Im not asking if its a waste. Im asking whats the difference in chips and which brand to go with. My engine is getting a make over physically and performance wise.

studdmstr

The best chip is the one that is custom created for your engine combo not an off the shelf chip. For not much more than getting an off the shelf chip you can buy the equipment to do it yourself.

89RsPower!

It's not a waste, it's just kind of pointless on a stock engine. As others have said "off the shelf" chips are a waste of money since they don't do much more than advance the timing a little and lower the fan on off temps. Your best bet would be to find someone local to you who does chip tuning. After you have done all of your other mods (headers, cat back, cam, heads, etc, etc) take it and have them burn you a custom chip to go with your combo or if you are willing to learn buy the equipment and do it yourself.

kkingsrulee

From what I've gathered previously on these forums, the timing advance doesn't apply to us with 305 TBI's correct?

There was a thread a while back that I was participating in where a couple of guys said that advancing the timing on an engine like mine won't help.

mikespeed

I also had a question about this. I have a 305 TPI, and my car FAILED smog visualy. The smog tech told me it had to be at 6* not 0*. So I set it to 6* and had it retested. (yeah he really faild me and made me retest 30 min later)

It didn't fail the sniff portion of the test. It failed the visual portion because it was timed wrong. (0*)

Is this something unique to the 305 tpi?

89RsPower!

no, there is an emission sticker under the hood of all cars. If the base timing it adjustable it needs to be set to what the sticker says or it will fail if they actually check it.

joes407

had the jet performance chip in my Z-28 when it had the 305. it made a small difference in performance. if i had to do it now though , which i just did, id use pcmsforless. they just made me a custom chip to the specs of my motor and im very happy. they had about a 5 day turn around time and i plugged it in and bam! it worked perfectly. im very happy, 150 dollars well spent!

ngonnelly

Any one know were i can get a stock computer chip i just did a swap from a 305 to a 350 and all i need now is the new chip i can not find one

89RsPower!

You can always have someone do a stock burn for you.. I'm actually in the same boat as you I did a very low budget 350 swap, its a 4 bolt main roller block with an lt1 roller cam, a set of world products sportsman II's, 22 lb injectors from a 350 car, AFPR and a mild port job on the factory tpi plenium and base. I've been running it with the factory 305 chip so far and it runs fine but I'm probably leaving a ton of power on the table..

joes407

id just use the 305 one for awhile. even my new chip says for use on 305 or 350 tpi. a factory e-prom chip for a 350 is big bucks from the dealer. ive got the jet performance chip for an 88-92 305 tpi Z-28 im not using. id sell it for 30 dollars shipped to you with instructions if you need them. let me know if you want the part # to look it up.

Kevin91Z

iTrader: (1)

I'm not that familar with TBI engines, but I would think 6* initial would work better for performance than 0* initial. The stock TBI timing curve is very conservative. I think it maxes out around 25* total timing at wide open.

The TBI initial timing is set at 0*. The TPI initial timing is set at 6*.

andetodd

Have many of you considered using the ECM that dynamicefi.com makes? If I'm correct, their program and computer will let you set your car's tuning to pass smog, and just as easily set it to a race tuning as well.

evilemokid94

iTrader: (6)

im looking at a stage 6 chip for mine

studdmstr

lol what exactly does a "stage 6" chip do for you?

evilemokid94

iTrader: (6)

70+ horsepower and it improves my mpg

kkingsrulee

LOL right.

andetodd

That's a nice amount of new power! Do you know anything about what the chip is tapping into to do this?

The EBL Flash computer I'm working with is able to change the injector firing rate to once per engine rev from something like twice per compression for MPFI engines. Maybe the stage 6 is pulling off some good tricks like this as well.

http://www.dynamicefi.com/EBL_PortMod.php

evilemokid94

iTrader: (6)

don't know i just found it online

studdmstr

70+ on a 3.1?!? Factory HP is only 140 so if by changing only the chip you get a 70hp increase that's a 50% increase in power. If it sounds too good to be true it probably is.

andetodd

I was assuming this chip was already in and this was a comment about the results. I wouldn't begin to believe numbers on a chip page unless I saw some explanation for them. I'm new to this category, but it looks like there are a lot of crap chips out there trying to get sold.

Kevin91Z

iTrader: (1)

I do the same thing with the same tune on 1 chip.

firebird310

all the tpi motors I have had, 2-350's, 3-305's have all had specs of 6 deg btc

thewizard

iTrader: (43)

As far as the chips go, will they work for multiple model years? I have a stg2 for an 89 305 TPI auto car, and would like to know if it will work in a 87 Camaro of the same setup.

DrewsCam

iTrader: (2)

i'm in the same boat as you guys ... so you say the best thing is to have the chip custom burned right? I will admit that this is the first tpi I have owned so this is all kindof new to me... is this chip located on the ecm or inside it or is it the ecm?

Convoy25

iTrader: (3)

i also wondered about this. i plan on putting in a 355 or 383 in place of my 84 305, would a chip help my new engine? it wouldnt be as computer controlled as the factory one

89RsPower!

A custom burn is really the only way to go, those off the shelf chips don't do much more than turn the fans on at lower temps and add some fuel and timing at WOT, it doesn't matter if they're a "stage 2" or 3 or 15 for that matter.. the chip or prom is located inside the ecm, it's under a rectagular cover that's held on by two screws.

andetodd

How much does a custom burn cost? How many options can you usually request? I'm wondering how much the cost/benefit is of doing it like this compared to using the ebl flash.

I'm able to throw a new tune on as often as I can figure out something else to do to for it with the EBL Flash. What's better is I can just do volumetric efficiency learns on the tune each time I go for a ride. After about 7 learn sessions the car's new tune starts to get very smooth.
I recently purchased an 89 iroc 305 tpi, and it was running like crap. After new plugs, wires and ignition there was still not much difference in how it ran. Instead of getting a custom tune, I installed the EBL flash. From the first time I started her up after installing the new ECM, this iroc has been kicking ***. I can't wait to put some serious mods on it and see what's possible.

What it cost me:
EBL Flash: $350 US
ECM(used): 50
Install: 30
4-Injector Upgrade: 75
Port Mod: 25
USB to Serial adapter: 30
Ship: 35
Total: $595

Since my ecm was not compatible with the ebl flash, it was an extra $50 for a used ecm and another $30 for it to be installed for me. With my laptop, a map sensor and some simple instructions to follow you can do a lot.

Check it out:
dynamicEFI.com

BobR is a member on here. He is the man running this operation, by the way.

CaptCutlass

Would you recommend the same advise for a TPI 5.0 or any other advise? I just want to bump the performance and mpg up as much as i can while staying with the stock 5.0 TPI. Its a convertible so i dont plan on going overboard really like an engine swap. Thanks!

Marktaco

Cheers for that information. Does it improve much advancing 6degrees initial? I cant see the tabs on near the harmonic balancer I can see the slot but where do you use the timing light to reference cheers?

vinny R

6-8 degrees is where the base timing should be set, not 0. It needs to be done with the EST wire disconnected.
IMHO I don't think any of those things are going to help with seat of your pants performance. Neither will an aftermarket chip. A lower t-stat and turning the fans on sooner will keep the car running cooler so I guess a little from that but it's negligible but this is a good idea. Advancing the timing will help slightly but if you go to far you could hurt your performance and maybe the engine.