sts twin turbo
Safety Car
Joined: Sep 2007
Posts: 4,359
Likes: 6
From: Los Alamitos California
St. Jude Donor '09
Safety Car
Joined: Sep 2007
Posts: 4,359
Likes: 6
From: Los Alamitos California
St. Jude Donor '09
Short distances between a head unit (turbocharger or supercharger) and the intercooler/intake also help to eliminate pressure drops. The amount of piping from the turbocharger to the intercooler is also not optimum when the turbocharger is 10 feet away.
The piping is also not very straight, making the distances further than needed. Then you have the oil lines feeding all the way to the rear of the car. God forbid you have a leak, you'll likely never know until it's too late.
Running turbochargers after cats is a very bad idea. When/if the cats go your engine injests the trash. You couldn't design a worse scenario.
San
Burning Brakes
Joined: Apr 2008
Posts: 815
Likes: 0
From: Virginia beach va
so how would the engine injest that trash because it doesn't take the same air that come out of the exhaust for the intake they are 2 seperate cambers completely. and if I were to put one on my car the cats would be gone so they wouldn't ruin the turbos not the enigine. and the STS has many good points there are a few people on here that have that system. and it's cheaper than the normal twin turbo because you don't need new headers to put the system oh and the pipes going from the front to the back act as an intercooler. But like everysystem out there they have there ups and downs. it's really what you want and feel compfortable with and paying for.
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Safety Car
Joined: Sep 2007
Posts: 4,359
Likes: 6
From: Los Alamitos California
St. Jude Donor '09
so how would the engine injest that trash because it doesn't take the same air that come out of the exhaust for the intake they are 2 seperate cambers completely. and if I were to put one on my car the cats would be gone so they wouldn't ruin the turbos not the enigine. and the STS has many good points there are a few people on here that have that system. and it's cheaper than the normal twin turbo because you don't need new headers to put the system oh and the pipes going from the front to the back act as an intercooler. But like everysystem out there they have there ups and downs. it's really what you want and feel compfortable with and paying for.
As I said I'm not a fan of the STS system. If you feel the STS is a good setup, maybe you should buy a small trailer and extend the turbochargers even further back (to the back of the trailer). After all, if the "intercooler" effect of the STS setup is optimum and there are no lag issues due to the length of piping, mounting the turbochargers even further back must be even better, right? Just extend the oil lines while you're at it.
San
Melting Slicks
Joined: Sep 2009
Posts: 2,028
Likes: 357
might want to re-read How Stuff Works
Exahust gasses spin the "hot side fan" of the turbo then get sent out the exhaust. The "hot side fan" drives the compressor fan on the intake side of the turbo. The hot side and compressor side do not mix any intake/exhaust air. The only way that a catalyitic converter pieces could get into the intake is if the bearing in the turbo had a catastrophic failure. Or if "Bubba" did the install and piped the exhaust into the intake. If the case is the latter, find a shop that knows how stuff works, not just thinks they do.
Racer
Joined: Oct 2009
Posts: 349
Likes: 0
From: Valley Center CA
A massive EGR valve thats what an STS system is! I am afraid that you are beating a dead horse here. Maybe the crap from the cat goes through a bearing between the outbound ehaust gas chamber and the inbound air chamber.
Racer
Joined: Mar 2007
Posts: 400
Likes: 1
OLDMANSAN you are totally wrong, the exhausts that moves the turbine that passes by the CATS exists as your regular exhaust on the back, this system is not conected in any way with the turbine/compresor that feeds the outside air to the intercoolers and then your engine.
Two separeted systems.
If a piece of your cats come loose, most likely will damage the turbine impeller, not your engine
Two separeted systems.
If a piece of your cats come loose, most likely will damage the turbine impeller, not your engine
Melting Slicks
Joined: Apr 2005
Posts: 3,418
Likes: 1
From: Chicagoland Area IL
Just go to LS1Tech and see which system is the most removed, that would be STS.
For all out drag use rear mounts do work well, but that is in a smaller window of operation.
Mike
Former Vendor
Joined: Dec 2005
Posts: 109
Likes: 0
From: Pembroke Pines Florida
Before everyone knocks the rear mount design, the fastest LSX drag radial car inthe world has twin turbos in the truck.
I personly like the sts kit over the aps. I wouldnt to use the sts kit for a 1000+ hp build not saying it couldnt happen. For a daily driven street car i think it is a good kit to have.
I would think that the sts kit would be the same for the grand sport as a base model
I personly like the sts kit over the aps. I wouldnt to use the sts kit for a 1000+ hp build not saying it couldnt happen. For a daily driven street car i think it is a good kit to have.
I would think that the sts kit would be the same for the grand sport as a base model
Safety Car
Joined: Sep 2007
Posts: 4,359
Likes: 6
From: Los Alamitos California
St. Jude Donor '09
Before everyone knocks the rear mount design, the fastest LSX drag radial car inthe world has twin turbos in the truck.
I personly like the sts kit over the aps. I wouldnt to use the sts kit for a 1000+ hp build not saying it couldnt happen. For a daily driven street car i think it is a good kit to have.
I would think that the sts kit would be the same for the grand sport as a base model
I personly like the sts kit over the aps. I wouldnt to use the sts kit for a 1000+ hp build not saying it couldnt happen. For a daily driven street car i think it is a good kit to have.
I would think that the sts kit would be the same for the grand sport as a base model
To clarify your other sentence, you meant "I wouldn't use the STS kit for a 1000+ HP build, but not saying it couldn't happen", right?
APS is dead from everything I've read, so comparing STS to APS isn't really relevant.
San
Former Vendor
Joined: Dec 2005
Posts: 109
Likes: 0
From: Pembroke Pines Florida
Just to clarify, is that "in the truck", or "in the trunk"? And if "in the trunk", you really mean in the muffler section, right?
To clarify your other sentence, you meant "I wouldn't use the STS kit for a 1000+ HP build, but not saying it couldn't happen", right?
APS is dead from everything I've read, so comparing STS to APS isn't really relevant.
San
To clarify your other sentence, you meant "I wouldn't use the STS kit for a 1000+ HP build, but not saying it couldn't happen", right?
APS is dead from everything I've read, so comparing STS to APS isn't really relevant.
San
Safety Car
Joined: Sep 2007
Posts: 4,359
Likes: 6
From: Los Alamitos California
St. Jude Donor '09
Racer
Joined: Sep 2007
Posts: 418
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From: Fallsington PA
Instructor
Joined: Mar 2009
Posts: 104
Likes: 0
From: West Monroe La.
i think the rear mount is a good idea... yeah it takes a split second long to spool up but by being at the rear of the vehicle the exhaust is cooler... with the exhaust being cooler it helps keep the turbo cooler... the cooler the turbo the cooler the air entering your engine and as everyone knows the cooler air in ur engine the faster the car