JWoodley
20+ Year Contributor
- 736
- 4
- Oct 12, 2002
-
Middle Of Nowhere,
Alabama
hey. im in the process of upgrading my exhaust system. im goin with a greddy 4-2-1 header and greddy EVO catback. with this on a stock GS, will a high flow cat help or hurt me? i dont want to lose all my backpressure. all comment/suggestions are welcome. thanks.