Cat bypass pipe.
#1
Track Day
Thread Starter
Join Date: Oct 2008
Location: Birmingham, Al
Posts: 17
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
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?
#2
Burning Brakes
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
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.
#3
I haddah Google dat
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I agree. No big change in sound or performance unless you are really on the gas. It's cheaper and won't wear out if the O2 sensor or dizzy goes kaput though.