exhaust silencers Options

[lagos]

just wondering if any of you guys are using a universal silencer on a 3in tip muffler and what you would recommend?

im not looking to make my exhaust quieter, but i am looking to restrict the air flow a bit. i noticed that with my ebc totally off, my boost creep is crazy. it starts to hit 7psi and it stays there under 4k, but from 4-7k it starts to boost creep to 14psi. thats a lot of creep! im thinking that maybe i can create some backpressure with a silencer so that the WG has less exhaust flow to deal with. i figure the silencer is cheap enough to give it a shot. im also going to test my WG to make sure its not hitting the 3in DP i have.

so, post some silencer links guys and tell me what you use!

[jgreening]

This whole approach to me seem very ill-advised. We open up our exhausts to access additional horsepower. Then, if there is a boost creep issue, we restrict the exhaust?

Why spend several hundred dollars on the performance exhaust in the first place?

Creeping boost is NOT an automatic problem with a free flowing exhaust on a ct-26 equipped car. In fact, I could get the gt28rs (with a similarly sized wastegate but much more flow) to hold at 11psi on a full 3" exhaust equipped car.

Something is wrong. My recommend is to diagnose the problem and then repair it.

[Insanity-74]

This whole approach to me seem very ill-advised. We open up our exhausts to access additional horsepower. Then, if there is a boost creep issue, we restrict the exhaust?

Why spend several hundred dollars on the performance exhaust in the first place?

Creeping boost is NOT an automatic problem with a free flowing exhaust on a ct-26 equipped car. In fact, I could get the gt28rs (with a similarly sized wastegate but much more flow) to hold at 11psi on a full 3" exhaust equipped car.

Something is wrong. My recommend is to diagnose the problem and then repair it.

The problem of the boost creep IS caused by the exhaust being too free flowing and the wastegate on the CT series Turbo not being big enough to cope with the extra exhaust gases produced by modified cars and wider exhaust systems. Nothing is wrong with you car, the turbo wastegate is the problem....it can be ported, ie make the twin port of the CT turbo into one big port....that should cure the boost creep issues, but you have to be handy with a grinding stone and VERY sure of what you where doing......gt28rs turbos have a better more free flowing waste gate design, thus dont suffer the boost creep issues of the CT range.

a 3sgte engine running any ct turbo dose not need a 3" exhaust at all. 2.75" is more than enough.

Unfortunately I have no pictures of a restrictor plate, but you could very easily fabricate one....kind of like an exhaust gasket with a smaller hole in the middle.

This post has been edited by Insanity-74: Jan 7, 2007 - 1:21 PM