Catted x-pipe
Thread Starter
Pro
Joined: Jan 2017
Posts: 638
Likes: 70
Catted x-pipe
I'm in the process of doing a clutch. The x-pipe is out and I'm wondering if I should clean out the cat material. I already have a cam and I'm getting heads and an intake soon. Any benefit to gutting them or not worth my time? Thanks, oh and my state doesn't have inspections so I'm good there.
Instructor
Joined: Nov 2016
Posts: 244
Likes: 103
From: Pueblo West CO
No, there is no benefit to gutting your cats or running without cats. These engines require a small amount of backpressure to run their best, and there have been a number of tests showing that removing the cats reduces power.
With modern cats, you can make ridiculous amounts of power without increasing emissions. I'm putting over 700 to the wheels through cats. With a conservative street tune and only 9lbs of boost.
With modern cats, you can make ridiculous amounts of power without increasing emissions. I'm putting over 700 to the wheels through cats. With a conservative street tune and only 9lbs of boost.
Melting Slicks
Joined: Nov 2011
Posts: 3,164
Likes: 258
From: Virginia
No, there is no benefit to gutting your cats or running without cats. These engines require a small amount of backpressure to run their best, and there have been a number of tests showing that removing the cats reduces power.
With modern cats, you can make ridiculous amounts of power without increasing emissions. I'm putting over 700 to the wheels through cats. With a conservative street tune and only 9lbs of boost.
With modern cats, you can make ridiculous amounts of power without increasing emissions. I'm putting over 700 to the wheels through cats. With a conservative street tune and only 9lbs of boost.
