Hi guys I have a question? I am running a Pettit 3 in downpipe, 3 in Pettit mid pipe and an Greddy 3 in racing exhaust. I was recently told that going to 4 in all the way back would result in a noticable improvement in power, can anyone confirm or deny this?

If I can get more power I will swith.

Thanks for the help.

Allan

SM2

 

Can't answer without knowing what type of engine, what modifications are done to it, and other info such as type of turbocharger (if you have one) how much boost is being run, etc