Complete Cat removal?
Thread Starter
Super Member
Joined: Sep 2010
Posts: 553
Likes: 3
From: Los Angeles
W210 E55
Complete Cat removal?
I am tossing the idea around of having a manifold/header-back pipe made up to the flanges past the secondary cat position to allow for easy bolt-up installation and re-installation of the cats at smog time.
This was a popular mod on the old 5.0 Ford Mustangs and yielded good results even with the lower output 225hp and dual 2.25" exhaust.
Wanted to know if anyone has done this and what I can expect?
-Noise/sound?
-Exhaust smell?
-Performance?
-What to do with the rear O2 sensors?
Thanks!
This was a popular mod on the old 5.0 Ford Mustangs and yielded good results even with the lower output 225hp and dual 2.25" exhaust.
Wanted to know if anyone has done this and what I can expect?
-Noise/sound?
-Exhaust smell?
-Performance?
-What to do with the rear O2 sensors?
Thanks!
Last edited by Schweinhund; Mar 25, 2011 at 01:58 PM.
MBWorld Fanatic!
Joined: Nov 2008
Posts: 1,560
Likes: 10
210 55
Not noise, Good sound, exhaust smell = LIKE A HELL, Pretty good performance, i made this to my car and is pretty hard to tell how much HP/TQ gain cause in a 360 hp car +10 or +15 hp is not extreme perceptible. but i can tell you you feel the change.. O2 sensors = Your car has rear sensors? mine has 2 only just after manifolds (you can remove complete cats & the ME/ECU don't know about) i canot tell you what you would made with your rear sensor to no get CEL
Hope that help
Fabio Daniel
Hope that help
Fabio Daniel
if you have only 2 O2 you would make what you want with the cats without any problem and no CEL
