350 whp from sts!?! thats all!?!?
Originally Posted by darkhorizon
NYSS, the injectors are at 80-90% duty, with plenty of fuel pressure............ Fuel is doing just fine if the injectors maxed out ever, I would know, if the injectors ever leaned the car out, I would know. I am asuming you have no idea how to even read a scan, so why are you posting this crap?.
The scans that you posted are in two programs that I don't have on my laptop, so no I didn't look at them. The point is, I don't have to look at those scans to know that there are some very obvious things wrong with this car. And I can completely understand why you wouldn't want to take advice from people that have been working on and tuning rear mount LS1's for a few years now.
To the OP, since you are going to have to start looking for a shortblock in the near future, take a look at LME. They are a sponsor, and know their stuff.
Out of morbid curiosity, what are your ambient temps when you are making these pulls?
Not many people have mentioned backpressure because the owner of the car mentioned running a .96 a/r. There shouldn't be any issues with backpressure.
Originally Posted by NYSS Guy
Not many people have mentioned backpressure because the owner of the car mentioned running a .96 a/r. There shouldn't be any issues with backpressure.
.81 a/r housing 15psi boost = 40psi backpressure
.96 a/r housing 15psi boost = 37psi backpressure
Turbo is T76 from innovative with an R trim turbine wheel 1.00 trim, big heavy ****. 3.5" V-band.
I haven't remesured pressure since all my changes, but it's definately lower because i've picked up about 100 rwhp around the same boost level. Went from 127mph to 131mph at 15psi in horrible weather. I'm rolling with the .81 all the time now since it's a bit more fun on the street. Biggest effect on backpressure (this is speculation haven't actually measured it yet) was when I went from 3" exhaust after turbo to 4" exhaust. Necking down the 3.5" outlet to a 3" exhaust turns out to be a good recipe for backpressure and slow spool.
Just figured i'd add this info for anyone who reads in the future.
Many of these kits came with a .61 a/r on the base 60 turbo as reported by others and mine was .61 as well. GT 70 was .81 a/r. Theirs a range that works and i think STS just gets a turbo in that range when its time for more turbos. I would think .96 a/r a bit sluggish and boost coming on a lot later but that's the one housing in the range STS's come with i have not tried.
Originally Posted by Public
Many of these kits came with a .61 a/r on the base 60 turbo as reported by others and mine was .61 as well. GT 70 was .81 a/r. Theirs a range that works and i think STS just gets a turbo in that range when its time for more turbos. I would think .96 a/r a bit sluggish and boost coming on a lot later but that's the one housing in the range STS's come with i have not tried.
Originally Posted by JAvenger007
are you sure thats the EXHAUST housing and not the compressor?
On The Tree
Joined: Sep 2007
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Originally Posted by NYSS Guy
This is just becoming comical. You know what, you're right. 160 degree IAT's are not the problem. The pcm pulling a ridiculous amount of timing is not going to hurt power. Stock valve springs aren't going to hurt either.
The scans that you posted are in two programs that I don't have on my laptop, so no I didn't look at them. The point is, I don't have to look at those scans to know that there are some very obvious things wrong with this car. And I can completely understand why you wouldn't want to take advice from people that have been working on and tuning rear mount LS1's for a few years now.
To the OP, since you are going to have to start looking for a shortblock in the near future, take a look at LME. They are a sponsor, and know their stuff.
Out of morbid curiosity, what are your ambient temps when you are making these pulls?
Not many people have mentioned backpressure because the owner of the car mentioned running a .96 a/r. There shouldn't be any issues with backpressure.
The scans that you posted are in two programs that I don't have on my laptop, so no I didn't look at them. The point is, I don't have to look at those scans to know that there are some very obvious things wrong with this car. And I can completely understand why you wouldn't want to take advice from people that have been working on and tuning rear mount LS1's for a few years now.
To the OP, since you are going to have to start looking for a shortblock in the near future, take a look at LME. They are a sponsor, and know their stuff.
Out of morbid curiosity, what are your ambient temps when you are making these pulls?
Not many people have mentioned backpressure because the owner of the car mentioned running a .96 a/r. There shouldn't be any issues with backpressure.
You are retarded, go away.
Originally Posted by Zombie
.81 a/r housing 15psi boost = 40psi backpressure
.96 a/r housing 15psi boost = 37psi backpressure
Turbo is T76 from innovative with an R trim turbine wheel 1.00 trim, big heavy ****. 3.5" V-band.
.96 a/r housing 15psi boost = 37psi backpressure
Turbo is T76 from innovative with an R trim turbine wheel 1.00 trim, big heavy ****. 3.5" V-band.
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Originally Posted by NYSS Guy
Hey Zombie, this is interesting info. But I don't really know what it means in the real world. I have a similar turbo, it is a little different. So, if I was seeing 37 psi of backpressure at 15 psi of boost....what does that mean? Is it high, low??
Originally Posted by Zombie
Too much backpressure = lower power and slower spooling. I've talked to engineermike about this. My backpressure use to be about 3:1 and 2:1 is considered good for a street car. Backpressure causes problems, it's best to reduce it as much as possible with reason.
Just going by that logic there it flip flops all i've read about that with these kits.
Logically in my head it seems like more back pressure on these kits would equate to faster spool times period? wrong?
just to clear things up, I'm the owner of this car, and I'm not dissagreeing with anything I've heard, I'm def ordering some comp 918s and new fuel pump and injeftors, and fmic is also on the way....
That's good to hear man. I know it sucks to spend all that money at once, but it will save you in the long run. I'm telling you, these setups are very picky. It only takes one little thing, whether it's mechanical or in the tune, and it throws everything off. You have a few things working against you right now, so you just need to start eliminating the bad things...and you're already doing that.
I would still suggest starting off a little lower on the boost when you get this stuff in. Make sure everything is running right at 5 psi before turning it up. But with the stuff you're getting, you should be able to run 8 psi all day long (with a good tune).
Good luck man, and as I said, pm me anytime. I'm not an expert, but I have learned a lot from my mistakes.
I would still suggest starting off a little lower on the boost when you get this stuff in. Make sure everything is running right at 5 psi before turning it up. But with the stuff you're getting, you should be able to run 8 psi all day long (with a good tune).
Good luck man, and as I said, pm me anytime. I'm not an expert, but I have learned a lot from my mistakes.
Originally Posted by 2000TurboVert
I might be wrong, but common sense tells me Less Back pressure.. More flow????
I'm not sure if you had a sarcastic or smart *** reply directed towards me in that post, but if so it was an honest question.
I've always read about keeping the stock manifolds with this kit and stock Y pipe. Just checking to see if this is really the way to go before i get rid of my longtubes and 3" ory.
Last edited by 99camarosupersport; Sep 13, 2007 at 12:36 PM.
Originally Posted by 99camarosupersport
I agree, but wouldn't higher gas pressure be better for these kits?
I'm not sure if you had a sarcastic or smart *** reply directed towards me in that post, but if so it was an honest question.
I've always read about keeping the stock manifolds with this kit and stock Y pipe. Just checking to see if this is really the way to go before i get rid of my longtubes and 3" ory.
I'm not sure if you had a sarcastic or smart *** reply directed towards me in that post, but if so it was an honest question.
I've always read about keeping the stock manifolds with this kit and stock Y pipe. Just checking to see if this is really the way to go before i get rid of my longtubes and 3" ory.
NO I was not being a smart ***... That was sincere..... I think the stock manifolds is all about HOLDING IN heat, instead of having it dissapated with ceramic coated longtubes......
I dont know much about the back pressure issue!!
Originally Posted by 2000TurboVert
NO I was not being a smart ***... That was sincere..... I think the stock manifolds is all about HOLDING IN heat, instead of having it dissapated with ceramic coated longtubes......
I dont know much about the back pressure issue!!
I dont know much about the back pressure issue!!
I just hate to do away with one to find out later they had their perks also, I'm too poor to afford LT's again any time soon. lol
