I am looking into getting a test pipe. How much louder will my exhaust be? i am going to get the Greddy SP2 exhaust, so will it be obnoxiously loud or will it not change the tone much?

 

Why?

 

it will be louder... alot louder

a test pipe will only give you +1-2 hp more over a good quailty high flow cat.... get a cat

 

unless you are built NA or FI...leave the cat alone.

 

agreed why the hell do u need a test pipe, i have a full boost set up on my teg and i have a high flow cat... so i know for a fact u won't be doing jack except killing us and the environment

 

Im going to get the Edelbrock Turbo kit and i just wanna open up the exhaust. If you guys think i wouldnt even benefit from a high flow cat lemme know. i dont wanna waste the money if it wouldnt help. And should i go with a 2.5" or 3" exhaust system? Or would a 2.25 be good enough for the small turbo?

 

high flow cat will help you out definatly.....