exhaust diameter

rob1570

DC2 GS-R
Hey guys, I have a 97 gsr with intake,header, test pipe, just lookin for some feedback on what piping diameter I should run. Only other mods I'm planning on doin are throttle body and maybe intake manifold, then getting a hondata, and tuning. I was leaning towards 2.5 in, good idea? Any help is appreciated, thanks
 

TegSox

Super Duper Moderator
I'd use 2.36/2.38 piping. 2.5 inch is good for setups pushing 190whp and up.
 

J_Jay_B

teg driver
i went with a 2.5 inside diameter and im very happy with mine... i didnt notice too much loss in throttle response.
i went custom with mine though and had a muffler shop make the pipes and hang the muffler.
 

rob1570

DC2 GS-R
i went with a 2.5 inside diameter and im very happy with mine... i didnt notice too much loss in throttle response.
i went custom with mine though and had a muffler shop make the pipes and hang the muffler.
yea I have a muffler shop do all my exhaust work so thats what I was planning on doing
 


J_Jay_B

teg driver
and i also think that 2 3/4 is not perfect... maybe if your pushing upwards of 250 whp on all motor it is ok. but otherwise way to big....
 
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