Hi, im new to this forum so as the rotary motor. i recently bought an 87 with a rebuilt motor and street ported. question is, I want to redo the piping and i was wondering what size/diameter should i go for? I have RB headers with dual exhaust piping on it.

 

Welcome to the forums.

I'm not a big fan of dual piping. I would recommend a single 2.5" from the header to a high flow resonator and then to a high flow muffler. I like the RB high flow stainless resonators and mufflers.

 

i'm a fan of the RB streetport system and if you don't intend on maximizing your output, it's what i'd recommend. so keep yours. you can't go wrong!

with that said, if you are trying to optimize, then custom is the way to go.

 

thanks for the replies, i was looking on putting 2.5 pipe coz i was thinking of swapping a tII motor, well, i dunno... just asking opinions..