The car is fairly simple, 96' LS motor converted OBD-1, short ram intake, GS-R throttle body, 4-1 DC Header, Magnaflow 5" N1 style canister, B&M fuel pressure regulator, AEM Cam Gears. I just put on the crane cams and i was suggested to upgrade piping. I already have 2 1/4" mandrel bent piping with a magnaflow resonator. Should i upgrade to 2 1/2" instead of what i already have? Later i was planning on boosting the car so i was thinking on upgrading anyways. Someone help me out, thanks.

 

2.5 inch catback will have some gains...it'll be worth it more when you're turbo'd.