junkcltr

iTrader: (1)

I can tell you with 100% certainty that is not happening. That defies laws of physics. See my earlier post about sample and hold capacitor still charged from the MAP read.

Since MS can work with "any" sensor, they were worried about biasing sensors with low resistance. If they put in bias resistors it would effect the sensor itself and the reading it produced. So they opted for no bias resistors. See my fix for interweaving A/D reads of a known value.

anesthes

iTrader: (12)

Maybe I'm misunderstanding what you are saying, but the get_adc() function appears to store each ADC in a unique memory address (global pointer). The read itself is actually in inline assembly, which I'm not a pro at, but anyway the function isn't generic. It's literally reading the processors ADC.

So are you saying the hardware ADC itself is re-using the stored value? I'm confused.

-- Joe

junkcltr

iTrader: (1)

Yes it is, but understand that there is only one ADC with a set of 8 switches in front of it. So, if the switch is set to MAP input then the ADC has the MAP voltage and SW reads this voltage. Then if the switch is set to IAT input which is floating, then the voltage stays the same at the ADC and SW reads this voltage. That is, it still sits at MAP voltage (or pretty close to it) when reading the floating input.

Suppose your job is to listen to two people saying words and report the last word you heard to your boss. Person A says "car" so you tell your boss "car". Person B says "dog" so you tell your boss "dog". Person A says "foo" so you tell your boss "foo". Person B says nothing so you tell your boss "foo". Your boss thinks Person B said "foo", but they really didn't. This is the broken wire/case you are seeing with your MAP/IAT.

junkcltr

iTrader: (1)

Yes, the one ADC has a capacitor which is charged up with switched to an input. Much like charging a battery. If you put 6 volts on a battery and then disconnect (float the input), it will sit at 6 volts.

anesthes

iTrader: (12)

I had no idea how the hardware side of it works. I'm a software guy.

I assumed each ADC in the CPU was a completely redundant component.

So the "Fix" is to bias the circuit to ground, but B&G didn't do that to have more flexibility on the read side. (At the expense of potentially not realizing a sensor is our of whack).

Is this why I see a lot of posts about guys running resistors to ground on their input's on the ms forums? I've always just glanced over those threads.

-- Joe

86CamaroDan

I have not. Its my goal to make it there this year though. Im 45min-1 hr south. Obviously ill need a good set DR's when i do go. Always been my fear of running a 15.0 lol. If i run anything over a 14 im selling the car

Street Lethal

iTrader: (16)

Your trap speed will tell you the true story even if you run a 14.0. At 3500 pounds, 410 Horsepower should net you 115-mph in the 1/4 mile, which translates to a mid eleven second ET with a very good sixty foot. Definitely looking forward in seeing the results...

86CamaroDan

Ill tell you right now, my 60' is gonna be terrible. LOL. I'd be happy with anywhere in the 12's

86CamaroDan

GD this thread got off track.

Orr89RocZ

iTrader: (20)

That happens alot around here lol

anesthes

iTrader: (12)

It's been a few days since we've had a good debate. Lets see, we covered ECM's, blowers vs turbo, LSx vs SBC, mufflers, gear ratios.

We haven't done tires in a while.

-- Joe

84Z28dude

iTrader: (2)

the last page is definitely not the place to start if you want to read about a 9 second TA

Orr89RocZ

iTrader: (20)

275 radial or leave it on the trailer

86CamaroDan

Quote:
Originally Posted by anesthes View Post
It's been a few days since we've had a good debate. Lets see, we covered ECM's, blowers vs turbo, LSx vs SBC, mufflers, gear ratios.

We haven't done tires in a while.

-- Joe
275 radial or leave it on the trailer

LMAO you guys are a riot LOL

Street Lethal

iTrader: (16)

Yeah, these threads tend to derail when everyone's ego's want to bonk heads with one another. Human nature. I don't mind at all so long as the information is beneficial for the readers. As far as updates go, I should have the drivers side installed today and hopefully upload a quick exhaust video tonight, or definitely sometime this weekend. I can't seem to find both exhaust hangers for the muffler, and although Walker makes both, most auto stores don't carry them, they are special order. I still have my 17" 315 MT drag radials, but I hesitate putting them on a 9.5" torque thrust rim...

anesthes

iTrader: (12)

I encourage the debate. Some of these build threads cover a LOT of different areas of the build and are beneficial to those whom are just reading.

I do get nasty PM's from time to time from two of our younger members complaining. I suspect it's because their build threads get zero activity.

-- Joe

anesthes

iTrader: (12)

Haha. I used to run 275's on my C4. That thing had the amazing ability to rip the steering wheel out of your hand going over every crack the tires found on route 93.

Do 275s fit a stock thridgen? Never tried.

-- Joe

Orr89RocZ

iTrader: (20)

Yup fit good in rear with alittle massaging. 275/60/15. Never had a 275 front street tire but they should fit fine.

Street Lethal

iTrader: (16)

That's what I had my 315's on, my old C4 with 11" ZR1 rims.

I hesitate putting them on 9.5" TT rims, considering stretching the rims out...

anesthes

iTrader: (12)

I have a 4th gen rear, so I can run any rim that fits a 4th gen.

Ever driven a C4? Nice cars but very road sticky and feedback sensitive on the steering. My C3's are more like Jeeps.

I have regular 245's right now on the Formula.

-- Joe

Street Lethal

iTrader: (16)

Haha, welcome aboard. I tend to stay away from minor updates, I mean I have pictures of when the headers got here, inlcuding one where I measure the primaries, but I figured most of you guys just want to see the meat and potatoes of the build and just want updates on when she is ready to fire up. But yes, I am happy to confirm that when they got here the other day, you can immediately see how big the primaries were, and I was very happy with the purchase. Still can't get over the damn price shipped to the door. Hoping to have it wrapped up today, drivers side is a pita, but its getting there...

Orr89RocZ

iTrader: (20)

That y pipe merge is terrible. I like the flowmaster y's or a custom formed merge by columbia river or spd exhaust

anesthes

iTrader: (12)

I threw the merge out and used a flowmaster Y temporarily. Next year I'll finish the dual 2.5's, but I really just need to get the car off the lift.

The headers are great for the money.

The o2 sensor location is whacked though. I had to "modify" my floor a little with a BFH.

-- Joe

Street Lethal

iTrader: (16)

What do you mean modify the floor for the O2 sensor? Are you running your wideband in that location? I put my narrowband in that location, fits good, but will be welding an O2 bung into the y-pipe collector for my wideband. So far everything fits perfectly, and believe it or not, despite cutting the corner of the tranny's bell-housing off where the dust cover bolts to, I realized I didn't even have to do that. They actually went in very easily. Anyways, these pics were taken after bolted down. Spark plugs are in, wires will be shortened and run overhead. When I pulled the starter I seen that one of the three fusible links' terminals were broken off, so I need to correct that before reinstalling the starter. Wanna get this on the road as soon as I can, so hopefully today I will have an exhaust clip for the thread...

anesthes

iTrader: (12)

Yeah. What's the narrowband for??

I have AFR heads which raise the exhaust ports a little bit, so my headers are a little closer to the floor than yours probably.

Speaking of which, what heads are those? A 1990 should be centerbolt of course.

I only have a power cable to my starter. I run all the leads to a Ford solenoid mounted on the firewall. Also makes it easier to start the car when I'm working in the engine bay.

-- Joe

Street Lethal

iTrader: (16)

Haha, the narrowband is for when/if the wideband goes bad...

The stock/original Speed Density LB9 is wrapped and sitting in my garage. This '90 GTA came with a manual too which was pulled. I picked up this stock LB9 w/700R4 from an '86 Iroc a long time ago, well, two to three years ago, low miles, as this is the 305 I am using as a test mule to be tested for nine seconds. I explained this awhile back, but I keep forgetting this thread is still essentially new, and is missing key information. This is why I don't really care what happens to this engine. Bone stock 305 w/auto, I ported the 416 heads along with the earlier TPI intake system. This is also why I had to make a new MAP sensor bracket a few pages ago because this plenum is for a MAF system, I have the original Speed Density setup on the original engine...

I'm trying to keep things essentially stock on the car, it'll make it easier to restore it back to original when I am finished playing with it. I fixed the starter wiring in this blistering 106* heat. All is good now...

Street Lethal

iTrader: (16)

Exhaust isn't all the way hooked up, just the headers into the y-pipe for now. I still need to mate it to the Flowmaster, it's just way too hot out to weld. When I pulled the turbo the tune was dead on, but now on the first try it needed lots of tuning down low, what a freaking difference though. Had the engine cut out on me when the fans kicked on, didn't even think to look at the BLM, so first I adjusted the fan enable, had the second one come on five degrees after the first. No difference, stalled out when first fan kicked on too. Watched the BLM when I tried again, and damn, 156 BLM. Added some fuel to the VE and got it down to 132 BLM for now, idle is stable. Damn thing already sounds unreal, had neighborhood kids flying over to check it out, that was cute. Anyways, will try to bang out the rest of the exhaust tomorrow, time to eat...

Off topic, but hey guys, mostly guys 35 and up, what do you think of when you hear the words Ford Focus? Yup, me too, absolute garbage lol. But look at this damn thing, where the heck was this when we were kids, ehh? This thing is freaking stock...

Orr89RocZ

iTrader: (20)

The focus st's are actually sweet little cars. I have a few buddys with them for dailys. Low 14's stock well driven, can get into 13's with alittle work/tune

anesthes

iTrader: (12)

Ex had a Focus. This is back when they first came out.

I've been really thinking about buying a new vette. Just don't know if I'd drive it enough to be work paying 60+.

Been looking at Mastercraft boats lately too, the V drive stuff. Seems like that's what everyone is buying now. But setup the way I want starts around $130.. Again, kinda step for something I use a dozen times a year at most.


-- Joe

Street Lethal

iTrader: (16)

... and the gas mileage is great too, they're starting to grow on me.

Those were the ones that looked like Chevette's, right? Mine wants one, but I am trying to talk her into the model in the video, I need something with power. That Cruze LTZ in my sig had a turbo, but it was freaking slow. Even with the T/C turned off, wow it was like going in slow motion. Once the lease was up I gladly gave it back lol...

No more vette's for me, the last one was leased too, insurance was an absolute waste. A few weeks back Joe the tree in my yard was struck by lightning, and luckily it landed nowhere devastating to the house. I'm dying for a pool, and the money I threw away on that vette could have had me swimming the day after that tree came down lol. Also tired of lying down while driving...

Anyways, I only have a few hours to give to the car today, if I don't get the muffler bolted to the headers setup, I'll still try to grab a quick video to upload. By the way Joe did you take the Formula out for a test drive yet...?

anesthes

iTrader: (12)

The wife leases. She gets a new vehicle every 2 years. I actually took my above-ground pool down last year when I bought the lake house, thinking I'd swim regularly in the lake but. So far this year I've only went twice and I typically run my boat in a different body of water so. Now we're thinking of another pool, perhaps a fiberglass in-ground.

Have not touched the formula this weekend, working on my main house. Today I'm a plumber haha.

Good luck with the exhaust! Post a sound clip

-- Joe

86CamaroDan

Dont buy a automatic Focus. From what I hear, the torque converters go all the time and their on intergalactic backorder. Brand new cars(Still under warranty) sitting at dealers waiting for them to come in because they wont move at all.

anesthes

iTrader: (12)

The ex's focus had a transmission problem at 40k. This is back in 2003 or so. Car was a POS, but since she had no job (for any continued length of time) and I paid for everything it was cheap.

-- Joe

86CamaroDan

I guess they went to a new sort of style transmission. I forget what my friend said it was (Hes a service writer at the local dealership) but its along the lines of VW's DSG. Focus's and fiesta's use the same thing, so id stay far, far away from those cars if their a automatic.

Street Lethal

iTrader: (16)

Joe, for a second I mistook the Ford Focus with the Ford Escort, that is why I compared it to the early Chevy Chevette a few posts up...

Dan, I think I'm going to stay away from it. I looked at one by the dealership this morning and it didn't really grab my attention like the one in the video, and the last thing I want to do is to buy one and then start modding it.

Can't get over the amount of tuning that was required to get it back to the way I wanted it from a simple exhaust swap. That turbo was very restrictive. Gotta go back under again in a few minutes as I have to double check the torque readings on the flywheel to converter bolts. Yup, I hear a slight chirping again that's getting louder, and the starter housing looks chafed, sigh. Anyone wanna hear it???? Yay!!!!

Who hear plays Mobile Strike by the way? Get to the chopper!!!!!!!

Street Lethal

iTrader: (16)

Haha, a quick trip to the bank then the local seven eleven and I ran into him again. This thing is sick, can't get into how fast he is because he street races this thing, but I had to grab a quick video from the parking lot. I-Phone cut out the audio at the best damn part, I'm sure the noise level killed it because that thing revs instantaneously and is freaking loud lol. Okay, I now have the inspiration to work on the GTA today lol...

Street Lethal

iTrader: (16)

Purchased two Walker exhaust hangers that were made in India, nuff said;



The welded arm bracket on the exhaust tube on the right is exactly 4" high, which matches the stock location for the original one perfectly just before I welded it. I was going to pull down the muffler, cut the bracket and add about an inch and a half to it in length to correct the appearance when my buddy gave me a better idea, just pull the exhaust hanger and add a one and a half inch spacer between the hanger base and the frame where it gets bolted. I have to correct this issue before welding the intermediate tube to the over the axle tube. Don't let the appearance fool you, the dual exhaust tubes are about eight to ten inches tucked in from the bumper...

Street Lethal

iTrader: (16)

I welded a one inch extension onto the Walker piece, all leveled up...

Joe, you'll get a kick out of this, wanted to share an amusing evening. Settled on a new 2016 Hyundai over the Ford, but I picked up another car along with it on the way back. Passed a used car dealer with an older Buick Regal that looked to be shunned by the much newer cars that were surrounding it. I pulled over and asked about it just for the hell of it because I wanted a beater for the colder weather, and I love the way the third gen coupes look. After seeing the mileage, then the price, I pulled out the wallet lol...

I get it to the house and figured I would give it a once over in the garage. Fluids all look great, idles like a kitten (save for a small vacuum leak), but I wanted to give it new brakes and rotors because that was the main issue; brakes, rotors, one hung caliper and a wheel alignment. I cried about it at the dealer acting like it was a big deal, and he lowered the price lol. He was already asking practically nothing for it, he must have wanted to just get rid of it. Anyways, got the fronts done in a few minutes, but the backs... jeez, damn. What the hell was GM thinking. It took me almost an hour to figure out I was dealing with "pivoting" single bolt calipers. What the hell was the design team smoking back then lol. Guess they figured luxury car, not performance oriented, but still, they should have used two freaking bolts per caliper back there.

But anyways that was my evening, added a "third gen" Buick Regal to the stable. I don't think it's possible to slap on an 3800 L67 supercharger onto the 3800 L27, would be pretty cool though if it were possible, would keep boost low, and would definitely go Megasquirt then for sure. She's a two door coupe and runs like a freaking champ. Great knock around car, especially for what I paid for it, which I'm still in shock about...

anesthes

iTrader: (12)

Those are front wheel drive right?

I had the previous body style in the early 90s. Was an '85 regal. Originally I think it had a 307, did a 350/th350 swap in it. cool car but it rotted out.
I wouldn't mind finding another one, but they are all crushed or high dollar restorations.

Have you driven the bird yet with the new exhaust?

-- Joe

Street Lethal

iTrader: (16)

Gonna get back on the GTA today and get some more work done. Yeah, these Buicks are FWD. After new pads and rotors all around I went to bleed the brakes and the damn bleed screw broke on one of them so I bought a replacement set, so now the rears have new calipers too. Can't get over how this thing runs, I am loving the immediacy of the 3800 engine in comparison with my old LTZ turbo Cruze...

This Buick has beaten it's fair share of grocery getters in the last 24 hours, including many BMW's rolling up to get some, I really wanna keep her and do something with her, like install a '95 M62 supercharger from a Buick Riviera, but I am going to flip it once I take care of a few more details. Should net me half the cost of the polished F1A setup for the GTA. I really hate to sell her, but I am not a big fan with red on red. Sooo close to painting it Black and keeping the chrome exterior, installing GN interior w/chrome rims and create a 90's Grand National, but I need to focus on the GTA lol...

DIGGLER

iTrader: (1)

Did they know you were racing them?

i had a '99 buick gs with supercharger. it was a pretty good car.

Street Lethal

iTrader: (16)

Oh yeah, they were stepping on it. Don't get me wrong, I wasn't pulling them with the Buick lol, but I was ahead. The car is starting to grow on me, again not too crazy about the Red w/Red scheme, but I am digging the style. Supposed to be working on the GTA today, but I'd like to get some fresh plugs, wires, coils and air filter for the Buick. You gotta see the exhaust lol, my gawd is it restrictive. Speaking of superchargers, there is someone local parting out a '95 supercharged Riviera. Hmm...

anesthes

iTrader: (12)

Concrete driveway ? Brave!

You have a lift in the garage ?

-- Joe

Street Lethal

iTrader: (16)

It doesn't get as hot under the blistering sun when under the car lying on the concrete, but yeah I have been looking to have the driveway redone very soon. I don't have a full lift in the garage, but a buddy of mine hooked me up with something that I use out in the yard. I get about four feet of clearance when under the car using it. This is why I am very lazy when it comes to trans removal, I don't have it in me like I used to, especially with only that much working space to utilize...

Didn't like the way the front tires were feeling so I bought two bearing assemblies. Tie rods seem fine. When under the Buick I seen that someone pulled the AC compressor in favor for a delete pulley, but left the AC compressor connectors in place. Might wait on that though. Already replaced the thermostat, got an oil change w/filter, air filter, but now I'm thinking tranny mount because I feel an ever so "slight" shake when hitting the throttle. Yup, a day that was to be dedicated to the GTA and I am back on the Buick lol. Gonna do the HUB bearings now in this 90 degree heat...

The 305 in the GTA needs to be pulled, I am not dropping the trans to change the flywheel this time, and it's definitely the flywheel. With an open exhaust it was hard to tell, but with the full exhaust now on you can hear the flywheel rubbing against either the converter, or the back of the block. Sigh, there is always something. I have a spare SFI flexplate to use, just effin tired of pulling the damn engine...

anesthes

iTrader: (12)

I have a 24x16 shop at the house with 1 lift. I have another 17x17 shop but it's mainly for storage/overflow parts. Sucks with one garage. I used to have a 40x60 building I leased but that was in Massachusetts.

I can't crawl around on the floor working on cars, I've got dramatic back and nerve damage. I'm lucky I'm still vertical.

Go park the Buick out back and work on the GTA. Summer is almost over. Get that F1 ordered.

-- Joe

Street Lethal

iTrader: (16)

That's honestly why I want to get the Buick done asap, I just want to flip it so I can order the Procharger. I have to freaking order the full Intercooled version from Procharger despite not even needing it because I am using the 4" Intercooler I have on there already, just need to figure out the intake routing by the battery. I don't know if I can squeeze 3" tubing through the fender where the horn is located down to the Intercooler and there is no way I am running 2 1/2", so the battery might have to go in the back in the hatch again so I can reuse the routing that I had for the turbo. I know I am losing the wiper fluid reservoir, so now I have to use the coolant reservoir for the alky and get my hands on a small coolant reservoir to mount next to the radiator...

anesthes

iTrader: (12)

Why don't you get a Vortech? Procharger's mount kit is junk anyway.

On the flip side, if you wanna sell the intercooler and piping I might know a guy. (me) who might be interested.

-- Joe

Street Lethal

iTrader: (16)

Is the TPI bracket still being produced by Vortech because I read they discontinued the system? That is the only reason why I am going Procharger, because Vortech apparently stopped making them. Definitely Joe, if you want the Intercooler w/tubing just say the word, because I really like the one I already have mounted, I have it setup so that it looks factory, even the Power Steering lines are hooked to it, and the bracket arms fit snug under the radiator support. People that see it can't believe a 4" is tucked in there the way it is...

anesthes

iTrader: (12)

The TPI kit is not, you buy the SBC tuner kit, and get the Ysi head unit.

I'd be interested in the bottom mount procharger intercooler and piping if the price is right, just remember I'm a cheap ***.

-- Joe

86CamaroDan

I did a whole write up on it under the power adders section. You wont have to go as low as i did and modifiy the alternator case seeing your charge pipe isnt going over the alt.