Pipe diameter/performance question...

[firefighter1]

Hello everyone,

I have a stock 318 with stock exhaust manifolds and I want to have dual exhaust installed. I already have dual chamber flownasters mufflers for the system. I was wondering what diameter pipe will maximize the performance and sound? Thanks!

 

[805moparkid]

probably dual 2.25, if you plan on building it up alot go 2.5"

 

[firefighter1]

Sounds good thanks!