Quote:
Originally Posted by ROC1ROB
I don't know the piping size on the Greddy, but if you're going turbo you better have a 3" exhaust.
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you do not need a 3 in exhaust 2.5 will work fine. Theory goes 2.5 will give you more of a lower end and where 3 will give you more upper end but you will lose some lower end. I am running 2.5 all the way through my car and compared to the people that have 3 in exhaust I do not see a difference in dyno numbers. Also if it does make a difference it is very minimal.
Frank