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Ok i have seen that this has become a hot subject lately so i thought i would go ahead and give a general info post on this setup.
How it works
the sts turbo system is a remote turbo system. This means it is located at or near the end of the exhaust pipe. This makes mounting much easier. It then uses a pipe from the cold side of the turbo to run all the way from the rear of the car to the front and into the intake. they say this long distance allows the intake charge to cool but it is not near as efficient as an intercooler or meth injection.
The shortcomings
Because of where the turbo is located it does not take advantage of the hotter more expanded gasses near the initial discharge from the engine. instead since it is located near the rear it gets cooler denser air passing through it. this is not efficient. To compensate for this a smaller turbo size must be used so it can spool up in a decent amount of time. This however causes even more backpressure on the exhaust. another problem with using a smaller turbo is it can not move the same cfm as a larger turbo nor can it produce the same boost pressure a larger one can before getting out of its efficiency range. Also the long distance the exhaust has to travle to reach the turbo and then the long distance the charged air has to travle to the MAF only increase lag. this contributes to the extremely lopsided dyno graph that these systems produce, it is very similar to what a supra's dyno looks like with an extremely oversized turbo. Another problem is that since no cooling system is used other than the length of the charged air line the air is still quite hot and has an increased threat of detination over an intercooled setup or a meth injection setup.
Actual usefullness
for the 1/4 mile this setup is not worth the money. by the time you spool up you will probably be about half way through the race and be playing catch up. for the road course this is not very useful either because by the time you spool you will be slowing down for the next turn. for highway racing this is your setup since you will already be close to spool and just be able to add the extra umph for a quick race to 100. other than this the setup is more of a bragging rights/ show peice/ just to be different. It has too many shortcomings to compare it to even an improperly setup standard turbo system.
i hope this post helped shed light on this subject and help you with your decicion and unerstanding of turbo systems [img]smile.gif[/img]
How it works
the sts turbo system is a remote turbo system. This means it is located at or near the end of the exhaust pipe. This makes mounting much easier. It then uses a pipe from the cold side of the turbo to run all the way from the rear of the car to the front and into the intake. they say this long distance allows the intake charge to cool but it is not near as efficient as an intercooler or meth injection.
The shortcomings
Because of where the turbo is located it does not take advantage of the hotter more expanded gasses near the initial discharge from the engine. instead since it is located near the rear it gets cooler denser air passing through it. this is not efficient. To compensate for this a smaller turbo size must be used so it can spool up in a decent amount of time. This however causes even more backpressure on the exhaust. another problem with using a smaller turbo is it can not move the same cfm as a larger turbo nor can it produce the same boost pressure a larger one can before getting out of its efficiency range. Also the long distance the exhaust has to travle to reach the turbo and then the long distance the charged air has to travle to the MAF only increase lag. this contributes to the extremely lopsided dyno graph that these systems produce, it is very similar to what a supra's dyno looks like with an extremely oversized turbo. Another problem is that since no cooling system is used other than the length of the charged air line the air is still quite hot and has an increased threat of detination over an intercooled setup or a meth injection setup.
Actual usefullness
for the 1/4 mile this setup is not worth the money. by the time you spool up you will probably be about half way through the race and be playing catch up. for the road course this is not very useful either because by the time you spool you will be slowing down for the next turn. for highway racing this is your setup since you will already be close to spool and just be able to add the extra umph for a quick race to 100. other than this the setup is more of a bragging rights/ show peice/ just to be different. It has too many shortcomings to compare it to even an improperly setup standard turbo system.
i hope this post helped shed light on this subject and help you with your decicion and unerstanding of turbo systems [img]smile.gif[/img]
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