o2 sensor issue
Thread Starter
Heel & Toe
Joined: May 2006
Posts: 20
Likes: 0
From: midland MI
o2 sensor issue
i've got a 98 c5 and im soon gonna run a 3 inch cat-less sysem from the header back...with there being 02 sensors after the cats are there any specific specs for extending the 02 sensor out any certain distance???
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
You shouldn't run the rears when you're catless. The rear sensors are for the sole purpose of monitoring the condition of the cats and reporting that to the PCM. Without cats, you should either have them tuned out or run O2 simulators. The fronts are essential for engine operation although even those can be bypassed by running in open loop - not recommended unless you know what you're doing.
Race Director
Joined: Apr 2004
Posts: 16,135
Likes: 5
From: Newberry FL
Cruise-In VIII Veteran
St. Jude Donor '07
Originally Posted by Patches
You shouldn't run the rears when you're catless. The rear sensors are for the sole purpose of monitoring the condition of the cats and reporting that to the PCM. Without cats, you should either have them tuned out or run O2 simulators. The fronts are essential for engine operation although even those can be bypassed by running in open loop - not recommended unless you know what you're doing.
I just had my rear O2s tuned out and removed the O2s.
