Chronicles of a 9 Second Trans Am... Final Chapter
#552
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
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Axle/Gears: 3.42, 3.23
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Currently i do, and it stays within 5% of its current state.
I havent even tried autotune over the last 2 or so years.
i would shut ego off, and it would add fuel, like keep adding tons and tons of fuel. Try it again the next day and it would pull fuel everywhere. Got so fustrated with it i stopped using it.
I havent even tried autotune over the last 2 or so years.
i would shut ego off, and it would add fuel, like keep adding tons and tons of fuel. Try it again the next day and it would pull fuel everywhere. Got so fustrated with it i stopped using it.
My car runs a little richer when it's hot out, I noticed, but it's still well within it's limits. I've been running it on 85-95 degree days lately without issue.
Other than my TH350 leaks like a freaking sprinkler.
Been hitting up the car shows, lot of NHRA cars. It's funny though. Guys running full cages, big blocks, etc and run mid 11s. I go to the track, the imports run low 9s.
-- Joe
#553
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Car: 86' IROC
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
years ago i used to follow the sloppy mechanics page on the daily. (its how i got into megasquirt) when i first got my MS2, i downloaded one of his 5.3 turbo tunes to take a look and the ve table looked like a 5th grader did it. i thought how the f does this crap even run?!?!?!
#554
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Car: 86' IROC
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
Hrmm.. Weird.
My car runs a little richer when it's hot out, I noticed, but it's still well within it's limits. I've been running it on 85-95 degree days lately without issue.
Other than my TH350 leaks like a freaking sprinkler.
Been hitting up the car shows, lot of NHRA cars. It's funny though. Guys running full cages, big blocks, etc and run mid 11s. I go to the track, the imports run low 9s.
-- Joe
My car runs a little richer when it's hot out, I noticed, but it's still well within it's limits. I've been running it on 85-95 degree days lately without issue.
Other than my TH350 leaks like a freaking sprinkler.
Been hitting up the car shows, lot of NHRA cars. It's funny though. Guys running full cages, big blocks, etc and run mid 11s. I go to the track, the imports run low 9s.
-- Joe
#555
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by anesthes
Been hitting up the car shows, lot of NHRA cars. It's funny though. Guys running full cages, big blocks, etc and run mid 11s. I go to the track, the imports run low 9s.
- Rob
#556
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by Orr89RocZ
Procharged car the dude drove several hrs to get to the shop for a tune. I couldnt believe it got here with that table lol
- Rob
#557
Re: Chronicles of a 9 Second Trans Am... Final Chapter
It wss a tpi based file, i ended up smoothing map manually by hand and slowly working into boost to see what air fuel did. Adjusted from there. Worked great but apparently the autotune didnt do a good job for normal driving which is weird cuz its a stick car and easy to hold rpm load spots. Should have dialed in well
#559
Re: Chronicles of a 9 Second Trans Am... Final Chapter
I had that problem when VE Learning with a one wire narrowband and LTH, kept going Open Loop because it wasn't keeping hot enough, that is when I switched to the heated LT1 narrowband, then of course the wideband. Old .friend dropped by today while I was working on the car, known as Mopar Rich here in New Jersey, guy has been racing for decades and decades. Asked me to head out to Cecil one weekend w/the guys, so maybe we'll finally meet up. Sucks you sold that damn Camaro though.
- Rob
- Rob
#560
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by DIGGLER
Fast cars pretty much never go to car shows. car show guys are basically pretending. Around here, a 9 second import is a unicorn that you will just about never see. maybe 1 in 300 cars.
#561
Re: Chronicles of a 9 Second Trans Am... Final Chapter
but around me we have a top list and on that list the top 9 are 7 sec cars that most are streetable enough to make a drive if they have to. One is mid 7’s and won drag week lol
some of them are 2000 hp gtr’s. One a 2jz tacoma truck that is primarily a class drag machine. Another 1300 whp supra stick car thats gonna have 7’s in it shortly. Been 8.2’s at 183 i think.
Then there were a bunch of 10-11 sec honda/subarus/dsm’s/evos etc. the usually street cars that dont often drag much. Couple of 9 sec evos i recall. Alot of 500-700 whp stuff
it just is crazy how fast some cars are now
#562
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by Orr89RocZ
it just is crazy how fast some cars are now
- Rob
#563
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by anesthes
Been hitting up the car shows, lot of NHRA cars. It's funny though. Guys running full cages, big blocks, etc and run mid 11s. I go to the track, the imports run low 9s.
-- Joe
-- Joe
#564
Re: Chronicles of a 9 Second Trans Am... Final Chapter
There will eventually be a limit. Today's street cars are reaching Top Fuel Dragster performance levels from the 70's and 80's,but there is no way, just no way,they will reach Top Fuelers by today's standards without doing some major transitions,which will turn the cars you mentioned far from street cars. This is why TF are stretched, factory wheel base is a disaster waiting to happen as 300-mph draws nearer and nearer..Just waiting for a serious disaster to happen on Street Outlaws, not that I want one to happen, but something is eventually coming if they keep pushing their limits...
- Rob
- Rob
#565
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
But as far as fast cars go, most of the faster street cars around here are turbo imports. 15 years ago on a street night a 11 or 10.5 car was king. Now these little turbo fart cars are faster than the v8 muscle.
On points days though, I'm sure it's different. I haven't been to the track on a points day in a decade.
-- Joe
#566
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by Orr89RocZ
watch any outlaw radial or no prep event. These cars are not streetable but the engines could be used in some street cars with minor changes. Those guys wreck a lot and catch air all the time. At 180+ mph slight aero upset and car is airborne.
#567
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
lol true
but around me we have a top list and on that list the top 9 are 7 sec cars that most are streetable enough to make a drive if they have to. One is mid 7’s and won drag week lol
some of them are 2000 hp gtr’s. One a 2jz tacoma truck that is primarily a class drag machine. Another 1300 whp supra stick car thats gonna have 7’s in it shortly. Been 8.2’s at 183 i think.
Then there were a bunch of 10-11 sec honda/subarus/dsm’s/evos etc. the usually street cars that dont often drag much. Couple of 9 sec evos i recall. Alot of 500-700 whp stuff
it just is crazy how fast some cars are now
Car shows 20 years ago were all chrome and model t's. Now it's a bit of everything. I've talked to some younger kids too with the import turbo tuner crowd. They accomplish a lot with a small engine.
It's still kinda funny to see a 20k built honda parked next to a 300+k Lambo.
-- Joe
#569
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by DIGGLER
who is doing that? that is faster than radial vs world cars
Q80 Racing is right behind them w/their own C7 Corvette doorslammer...
That is just sick fast!
- Rob
#572
Re: Chronicles of a 9 Second Trans Am... Final Chapter
N E VAY.... back to the build. This is, without a doubt, the last time I swap headers on this damn car. So tired of doing this w/out a lift, and these headers always require lifting the engine and pushing it left and right for clearance. Running so rich prior to the LTH header install, I was able to see how much the turbo headers were leaking, not that substantial, but enough that needed some attention. Original welds came out good, but wanted to go over them. Wasn't about to play that game of "did it cover", only to be pissed off when they're in and the engine is started w/the same leaks being prevalent, so I brazed over the steel welds I made. This was the only way to be totally sure about the coverage in my case, and the brass has a 1700 degree melting point, so I am not worried, and like I said, I welded the brass over the original welds I made, so it's all good. Need to coat them again before putting them back on, of course...
- Rob
- Rob
#573
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Car: '88 Formula, '94 Corvette, '95 Bird
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
N E VAY.... back to the build. This is, without a doubt, the last time I swap headers on this damn car. So tired of doing this w/out a lift, and these headers always require lifting the engine and pushing it left and right for clearance. Running so rich prior to the LTH header install, I was able to see how much the turbo headers were leaking, not that substantial, but enough that needed some attention. Original welds came out good, but wanted to go over them. Wasn't about to play that game of "did it cover", only to be pissed off when they're in and the engine is started w/the same leaks being prevalent, so I brazed over the steel welds I made. This was the only way to be totally sure about the coverage in my case, and the brass has a 1700 degree melting point, so I am not worried, and like I said, I welded the brass over the original welds I made, so it's all good. Need to coat them again before putting them back on, of course...
- Rob
- Rob
-- Joe
#576
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by anesthes
Oh I see. Did you use MIG (gas) to weld those up?
-- Joe
-- Joe
- Rob
#578
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Tremendous shout out to Phil (//<86TA>\\), got back from his house here in Jersey not too long ago, and he hooked me up big time. Though I am finishing up putting the turbo headers back on as I write this, I wanted to bring the car back to stock appearing, and the cutout in the front that I made was really starting to, well, annoy me. It works great, but I just don't like the look anymore. I seen Phil was selling a GTA front bumper, so I reached out to him to buy it, and he freaking gave it to me instead! I have met countless members over the years, but wow he blew me away. What an awesome guy, true gear head, and his '86 TA is bad @ss AF! Was drooling when I seen how he set up his 335 tires out back with the mini-tubs, damn thing looks factory! Gotta get him to bring it out one night to play, maybe at Island Dragway because I hear they're redoing the track now that E-Town caved. Thanks Phil, won't ever forget that bro...!
- Rob
- Rob
#579
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
#580
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by QwkTrip
Doesn't get better than that!
- Rob
#581
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Okay, can finally put an issue to bed and move on. I did not want to slap the turbo on without resolving this issue first which is basically why there has not been an update for a few days, because I needed the engine to run flawlessly in every conceivable way before switching over again. As some of you know, the cam I am running is huge; 85 kPa at idle in gear, so a lot needed to be adjusted way ahead of time because most if not everything gets triggered way before that in a starter bin. Long story short, engine was dialed in perfectly for quite awhile, there was just one issue, the IAC.
Cold and warm startup were bothering me, and the IAC seemed to close for no apparent reason when the commanded RPM and kPa were calling for it to open, and when it did open, it would go no higher than 10 steps. Found out over the weekend as to why, there are two areas in the IAC tables that control the amount of time the transition from Park to Drive, and vice versa essentially takes. Not sure why, but those two areas also impact the idle state, on a constant basis not just startup. I went through every single area in the bin looking for the cause, but I kept skipping over that area because it never even dawned on me that they were (two IAC areas causing the issue) the two culprits causing an IAC lock. Very weird. But it's fixed.
- Rob
Cold and warm startup were bothering me, and the IAC seemed to close for no apparent reason when the commanded RPM and kPa were calling for it to open, and when it did open, it would go no higher than 10 steps. Found out over the weekend as to why, there are two areas in the IAC tables that control the amount of time the transition from Park to Drive, and vice versa essentially takes. Not sure why, but those two areas also impact the idle state, on a constant basis not just startup. I went through every single area in the bin looking for the cause, but I kept skipping over that area because it never even dawned on me that they were (two IAC areas causing the issue) the two culprits causing an IAC lock. Very weird. But it's fixed.
- Rob
Last edited by Street Lethal; 08-20-2018 at 08:17 AM.
#584
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
Update from the other day. Had trouble uploading the video w/the phone, but the YT app seems to be okay today;
- Rob
https://www.youtube.com/watch?v=q7DQMnRfYYU
- Rob
https://www.youtube.com/watch?v=q7DQMnRfYYU
So you went to a single turbo? I thought you were doing twins ?
The kid I sold my single turbo setup to ripped it out and is now putting a vortech in his GTA. Should be a nice street car when it's done. LT1
-- Joe
#585
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Joe, I have it as an open downpipe at the moment that dumps just behind the front passenger tire. It's echoing in the garage too, that is why it sounded so muffled using the phone. Believe it or not twins would be rather easy at this point, it's just the downpipe on the drivers side being the biggest issue. Can't wait to get this thing back on the road, have the perfect converter for it based on all of the datalogs, but that still needs to go in too...
- Rob.
- Rob.
#586
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
Joe, I have it as an open downpipe at the moment that dumps just behind the front passenger tire. It's echoing in the garage too, that is why it sounded so muffled using the phone. Believe it or not twins would be rather easy at this point, it's just the downpipe on the drivers side being the biggest issue. Can't wait to get this thing back on the road, have the perfect converter for it based on all of the datalogs, but that still needs to go in too...
- Rob.
- Rob.
-- Joe
#587
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by anesthes
I kinda want to trade my truck in for a turbo diesel. I miss having a turbo diesel truck. The raw pulling power is just amazing. I don't think I'll ever put a turbo on a car again though.
-- Joe
-- Joe
- Rob
#588
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Originally Posted by anesthes
I miss having a turbo diesel truck. The raw pulling power is just amazing.
-- Joe
-- Joe
- Rob
#589
Re: Chronicles of a 9 Second Trans Am... Final Chapter
This is how out of touch I am with my own NYC neighborhood. I can't get over it, where the hell have I been lol. Anyone wanna guess what those pumps represent lol? I'll give ya a hint.... E85!
- Rob
- Rob
#591
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Joe, are you planning methanol injection, or are you just keeping boost/timing low? I'm really stoked about how may E85 stations there are around me. This car is only seeing a few nights a week and weekend duty, not a daily driver by any means, so I'd be crazy not to make the switch to E85 with that many stations prevalent. Need to start looking for injectors now, fuel pump compatibility is the easy part. Sticking w/the IC that I already have, just need a 180* coupler & some 3" aluminum tubing.
- Rob
- Rob
#592
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Car: '88 Formula, '94 Corvette, '95 Bird
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
Joe, are you planning methanol injection, or are you just keeping boost/timing low? I'm really stoked about how may E85 stations there are around me. This car is only seeing a few nights a week and weekend duty, not a daily driver by any means, so I'd be crazy not to make the switch to E85 with that many stations prevalent. Need to start looking for injectors now, fuel pump compatibility is the easy part. Sticking w/the IC that I already have, just need a 180* coupler & some 3" aluminum tubing.
- Rob
- Rob
IAT temps so far have been pretty reasonable. Vortech head units are very efficient, they don't put out the crazy temps that prochargers or turbos do.
I think that trying to get more power out of my combo would be a wasted effort, the motor is already too much for the car (no cage) at the track, and it's probably close to ejecting the crankshaft as it is.
How many folks on here are making big power on 2 bolt 400 blocks?
-- Joe
#594
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Joe, you keep flirting with the idea of going LT1. That engine eventually needs to come out, as will mine. In the end, this 305 will more than likely crack a piston, not from detonation, but from the amount of power that a cast piston just can't handle. Everything being done is in preparation for the next engine, and an e-trans is definitely next. Standalone TCI controller for the trans, and a 9" w/torque arm mount, and I'll be happy in terms of drivetrain. Always wanted a fuel injected 454-SBC w/T88 dressed in 305 valve covers lol...
- Rob
- Rob
#596
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Car: '88 Formula, '94 Corvette, '95 Bird
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Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Chronicles of a 9 Second Trans Am... Final Chapter
Joe, you keep flirting with the idea of going LT1. That engine eventually needs to come out, as will mine. In the end, this 305 will more than likely crack a piston, not from detonation, but from the amount of power that a cast piston just can't handle. Everything being done is in preparation for the next engine, and an e-trans is definitely next. Standalone TCI controller for the trans, and a 9" w/torque arm mount, and I'll be happy in terms of drivetrain. Always wanted a fuel injected 454-SBC w/T88 dressed in 305 valve covers lol...
- Rob
- Rob
If I did put an LT1 in the thirdgen, it would be for a lower HP street build - like a sub 500hp type deal. But it wouldn't make sense, as it's not really a nice street car. it's a thirdgen. The car is cool, don't get me wrong, but it doesn't handle, corner, or stop as good as my stock C4. And it's not even comparable to a C6 or C7.
I drive it to car shows, and if I have time, I'll haul it to the track.
I just don't want to blow it up, cuz I won't fix it. I'll part it out.
-- Joe
#597
Re: Chronicles of a 9 Second Trans Am... Final Chapter
I guess it depended on the options. Mine came w/4 wheel disc brakes, manual w/3.42's, full handling package. Fully loaded, every conceivable option, but I can't find the damn SPID, and I know I have it somewhere, Good thing is that it's a '90, so getting another SPID should be a breeze, thank God lol. But yeah, these GTA's rivaled the C4, even in price. Poor Camaro's were hung out to dry in the 90's...
- Rob
- Rob
#598
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Re: Chronicles of a 9 Second Trans Am... Final Chapter
I guess it depended on the options. Mine came w/4 wheel disc brakes, manual w/3.42's, full handling package. Fully loaded, every conceivable option, but I can't find the damn SPID, and I know I have it somewhere, Good thing is that it's a '90, so getting another SPID should be a breeze, thank God lol. But yeah, these GTA's rivaled the C4, even in price. Poor Camaro's were hung out to dry in the 90's...
- Rob
- Rob
Different vehicles for different purposes. I have a brand new wrangler too, and a 3/4 ton GMC for hauling. And a harley, and a ninja, and so on and so on. They don't make a single vehicle that's good at everything.
-- Joe