I'm planning on upgrading my exhaust soon. Looking at the RPW equal length header for my GS. Thinking about going 2 3/4" pipe from the header back, then a custom y-pipe, and dual carbon fiber mufflers from HKS. Not planning on any cat, resonater, or flex joint at this point. Give me your opinions.
I'm running duals right now with 2 1/2" piping. I just want to install a new header and mufflers with slightly bigger pipe. I wanted to use 2 3/4" pipe but the mufflers piping diameter is 2 2/5" (60mm). And the cat I was wanting to use from Random Technologies is 2 3/4". After further reading I realized the RPW race header from Tearstone did include the flex-joint pipe.