Should I replace my 2000 Civic SI mid pipe for a 2.5 mid pipe? All Im doing is runing a mid pipe no exhaust, and screw you no exhaust haters (well if there is any on this board )

 

What other mods do you have? I think that would make a difference.

 

just intake for now

 

what do you plan on doing to it. If you're only going to do intake, header and mid-pipe then maybe just 2.25" like you would do if you had a straght through muffler. But if you're eventually going to go turbo, hell go 3" pipe exiting right behind the front wheel