As of right now I am thinking about doing a turbo upgrade but at the same time want to continue keeping the car as quiet as possible during normal driving. I have a catless up-pipe, catted bellmouth downpipe, stock midpipe, and the scoobysport axle back. When I do the upgrade will the stock midpipe hinder performance? I plan on going with an external wastegate as well when I do my turbo upgrade. Thanks.
Well I'm going to upgrade the turbo soon to an EVO III 16g. So I'm not sure if it'll hold it back then, I know it doesn't really make a difference on a stock turbo obviously, but just checking if it was a bigger turbo. The reason I left the stock rear exhaust pipe is due to noise reduction and droning.
Not at all trying to discredit Mosc and his knowledge. He has helped me with questions also. But thought this might also help you some to understand and see that its not that big a deal CobbTuning.com - Exhaust Design
Terminology for the 2 "intermediate" pipes has never been and never will be clear. I have found that most people refer to the pre-muffler portion of the catback as the midpipe and the pipe with the 3rd cat, the catpipe so that is what I call them. Too bad the guy that made that diagram thought otherwise...