Just like the subject says. I'm getting my exhaust done tomorrow and was wondering what would be better. Going from the header to the y-pipe to the mufflers I dunno if I should get 2.5 or 2.25. What do you guys all have?

 

You got a Header or stock manifold?

 

header

 

i know its going to be loud that i don't care about. Was just wondering if I should go with 2.25 for more back pressure

 

Hmm.. Well..

I'll leave this one to the pros.. I have yet to learn myself just how much backpressure (if any) is good for a rotary..

If you have a stock manifold I would say 2.5" for sure, considering you already have a ton of BP from the stupid stock manifold..

 

I have a 2.5 racing beat exhaust on a N/A GXL. Plenty of pressure to operate the Aux ports.

 

do you have the presilencer?

 

yeah I have the presilencer. It has a tube on the inside to direct air into the split air pipe.

 

2.5