Catted X-pipe
Thread Starter
Safety Car
Joined: Feb 2003
Posts: 3,845
Likes: 95
From: Springfield MO
Catted X-pipe
I’m currently running speed engineering headers and xpipe on my 08 base without cats. I want to add cats or even run a different catted xpipe. Has anyone successfully added cats to the speed engineering headers? Thoughts? (A6 auto)
Last edited by JJ 86; Jan 20, 2021 at 04:59 PM.
Cruising
Joined: Jun 2018
Posts: 12
Likes: 1
I'm running the same headers and x pipe on my 08. I added magnaflow high flow cats. They are welded to the headers and the x pipe is clamped to the cats. Works fine so far. The cats will need to be installed as far forward as possible to gain maximum distance from the floor pans. I trimmed a good bit off the header collectors to accomplish this and installed new o2 sensor on the cats themselves. If interested I could probably get you the part number for the cats.
Thread Starter
Safety Car
Joined: Feb 2003
Posts: 3,845
Likes: 95
From: Springfield MO
I'm running the same headers and x pipe on my 08. I added magnaflow high flow cats. They are welded to the headers and the x pipe is clamped to the cats. Works fine so far. The cats will need to be installed as far forward as possible to gain maximum distance from the floor pans. I trimmed a good bit off the header collectors to accomplish this and installed new o2 sensor on the cats themselves. If interested I could probably get you the part number for the cats.
Cruising
Joined: Jun 2018
Posts: 12
Likes: 1
When I first built this system I initially went with a cheaper pair of Flowmaster cats. Those were junk. They looked just like the Magnaflows but were definitely not the same cats. I did not take any pictures of the finished exhaust.
