STS Efficiency
TECH Apprentice
Joined: Jan 2004
Posts: 337
Likes: 0
From: Frisco TX (Dallas Area)
Originally Posted by 1point3liter
The lack of efficiency in a rear mount kit is a mirror of its potential. The kit is cheaper and can make over 400rwhp; no one is denying that. If you want to make more than 4XX rwhp it's lacking potential and another kit would be better suited. You're comment is definitely the most ignorant to date. 
No offense, but do the research before you pontificate. I have. Opinions aren't facts unless backed by empirical evidence.
12 Second Truck Club
Joined: Feb 2002
Posts: 5,574
Likes: 0
From: Sacramento, CA
I still think some you guys are funny.
If the STS kit can make 410-440rwhp on 5psi then you think going to 10 or more psi isn't going to go over 500rwhp?? What kind of sense does that make?
If the STS kit can make 410-440rwhp on 5psi then you think going to 10 or more psi isn't going to go over 500rwhp?? What kind of sense does that make?
I find all the talk of lag funny... I have a GT67 with a .96 AR. I get full boost a 3000 RPM.
So, just out of curiosity, how many of you guys who have decided that the STS kit won't work have ever driven, ridden in, or actually tested the kit?
Last edited by TurboBerserker; Sep 9, 2004 at 11:35 AM. Reason: temp issue already addressed above
It's almost the same with the STS kit
Once the air has been compressed, the only inefficiencies are the restrictions within the intake and intercooler. That's what causes boost to drop. On the exhaust side of things though, the primary inefficiency is heat dissipation before the turbo. The farther away from the exhaust ports, the more the exhaust will cool down, the less energy you have to spool up and generate boost. You've got significantly more loss due to heat dissipation in a long exhaust than you do in a long intake.
The STS kits work. That's been proven more than enough already. They can and do make decent power, but they do have a lower potential due to all the lost heat through the exhaust.
TECH Regular
Joined: May 2003
Posts: 404
Likes: 0
From: Jacksonville, FL
Originally Posted by TeeKay
You seem to know a lot for someone who hasn't tried it.
The kit produces 5-6 psi for low boost applications.
Are you comparing this to a high boost of 10-17 psi application? Some folks just do not have the conceptual capability to understand the significance of one kit over another. The STS WILL add 100-120 hp to a given install, that's a fact!
Wow, you're absolutely right. That's 4XXrwhp. ...Amazing...
For more you have to do the same things that everyone else has to, fuel, tuning, and whatever other mods are needed to achieve the projected HP! Moral to this story is that if you don't provide the needed support to the mod, you're not going to get the expected results!
No offense, but do the research before you pontificate. I have. Opinions aren't facts unless backed by empirical evidence.
Apparently you still need the manual.
If you read my posts you would understand that I know this kit has it's place. The STS nut swingers are the ones comparing rear mount turbo's to those found on 9 second cars.
thank you.
TECH Regular
Joined: May 2003
Posts: 404
Likes: 0
From: Jacksonville, FL
Originally Posted by jRaskell
But it's not almost the same.
Once the air has been compressed, the only inefficiencies are the restrictions within the intake and intercooler. That's what causes boost to drop. On the exhaust side of things though, the primary inefficiency is heat dissipation before the turbo. The farther away from the exhaust ports, the more the exhaust will cool down, the less energy you have to spool up and generate boost. You've got significantly more loss due to heat dissipation in a long exhaust than you do in a long intake.
The STS kits work. That's been proven more than enough already. They can and do make decent power, but they do have a lower potential due to all the lost heat through the exhaust.
Once the air has been compressed, the only inefficiencies are the restrictions within the intake and intercooler. That's what causes boost to drop. On the exhaust side of things though, the primary inefficiency is heat dissipation before the turbo. The farther away from the exhaust ports, the more the exhaust will cool down, the less energy you have to spool up and generate boost. You've got significantly more loss due to heat dissipation in a long exhaust than you do in a long intake.
The STS kits work. That's been proven more than enough already. They can and do make decent power, but they do have a lower potential due to all the lost heat through the exhaust.
There's nothing wrong with the kit. It's a makes decent power for the money, but has limitations.
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TECH Enthusiast
Joined: Oct 2003
Posts: 729
Likes: 0
From: Bakersfield, Ca.
Actually, there has been no one that I know of that owns a STS kit and says it's more efficient than a standard turbo setup... So it is not the STS Turbo nut swingers that have been pounding its point. It's mostly people that are trying to discredit the kit that start the hash slinging.
BUT... its in-efficiencies (sp?) are worked around by doing other combinations, bigger turbo and smaller housing... there is no reason this kit can't do 700hp, it WILL not be as effective as a front mount system, but this kit was never designed to do that. It's us "NUTSWINGERS" that are trying to do the "UNCONVENTIONAL".
BUT... its in-efficiencies (sp?) are worked around by doing other combinations, bigger turbo and smaller housing... there is no reason this kit can't do 700hp, it WILL not be as effective as a front mount system, but this kit was never designed to do that. It's us "NUTSWINGERS" that are trying to do the "UNCONVENTIONAL".
Last edited by Wildman; Sep 9, 2004 at 03:16 PM.
Launching!
Joined: Jun 2002
Posts: 296
Likes: 0
From: Birmingham, Al
I have an STS Turbo on my 2000 Chevy Truck and I'm a dealer. I have recorded mid 8 second runs in it on street tires with only 5lbs of boost. With tire spin of the line and shifting into 2nd. There is no noticeable lag under acceleration. They work well. Thats all there is to it. You can find problems in any performance setup. Given time you can overcome them. Yes its different and it goes against what many have learned about turbos, but as I read earlier, if it weren't for people stepping out and doing something different we wouldn't be where we are today. So dont write it off. Its a great kit and its only going to get better.
I'm very interested in this kit. I'm just curiuous about the turbine a/r. If it is smaller than normal to increase the backpreasure to increase velocity what does this do to the exhaust valves? I'm pretty sure they worked this out with Garrett, but I'm curious.
