Cat bypass pipe.
Thread Starter
Track Day
Joined: Oct 2008
Posts: 17
Likes: 0
From: Birmingham, Al
Cat bypass pipe.
3.2l Carrera. Any one used the OBX cat-bypass pipe on one of these.
Most of the ones I've seen have a resonator in place of the cat. The obx has a pipe that looks like a resonator. Just curious about the sound level with out the cat and just the muffler?
Most of the ones I've seen have a resonator in place of the cat. The obx has a pipe that looks like a resonator. Just curious about the sound level with out the cat and just the muffler?
Burning Brakes
Joined: Feb 2004
Posts: 800
Likes: 5
From: Shadow of Monticello
I had one on an 85 ROW car. Didn't really sound much different, if at all. Had to replace it with a cat as I then lived in an area that had rolling dyno emissions testing, and with the cat bypass it failed miserably. New cat made for awesome numbers, no noticeable change in performance.
