duel to single exhaust
 

I have duel exhaust right now. But I want to go single. My question iswhat size exhaust. Piping is good. And is There a down fall to converting. Its a non turbo fc. Thanks

86 Rx7.
you will lose your 5/6 port activation if you take the Cat off.
If you get around that somehow then the piping should be ok around 2 to 2-1/2,3 inch.
Anymore than that you just ask to get Cited for noise.