i searched for like 10 min and could get anything to come up. i have heard mix thoughts on weather i should get a 3in or 2.25 inch. im thinking the 3 inch thermal exhaust turbo set up. i have been herin that it will not have enough back pressure and fry my valves? so if any one know whats up and if 3 or 2.25 is the way to go. im leanen toward 3 cause i hear more people say to go 3inch.

 

I have 2.5 thru-out.... works great...

 

i am also running a 2.5 in exhaust and also i have the dc sports type r header with the 2.5 in collector.

 

2.5 is perfect..you don't want anything too big

 

how loud is a 2.5in setup?

 

how loud?

 

It depends on if you got a factory cat, test pipe or high flow cat. It will be a little louder with a normal cat but if you have a test pipe or high flow it will be a lot louder.