Originally Posted by fastNugly @ BP
Yea, he will be getting a T1000 and those codes can easily be ridden of by WhiteLightning.
WhiteLightning has already done that for a few we passed over his way.
Just an update on this.....
yes, rear o2's can be turned off.
front o2's can be turned off too, but should not be done. the front o2's supply the PCM with crucial info to make the motor run right.
typical o2 codes from LT headers are:
P0133 1/1 o2 slow response (this is a front o2 code)
P0153 2/1 o2 slow response (this is a front o2 code)
P0139 1/2 o2 slow response (this is a rear o2 code)
P0159 2/2 o2 slow response (this is a rear o2 code)
all 4 codes above can be turned off in the WL tune.
there are also "Exhaust Transport Delay" that can be adjusted for ST or LT headers by increasing the #'s in the tables to tell the PCM that the o2's are further downstream.
increasing "Exhaust Transport Delay" usually stops the codes.
This is the response I got from Dave aka Whitelightning and like I said, we have done a few already with Dave and he has eliminated this codes by simply adjusting the #'s
Any one has questions, let me know
Or needs tunes done after LT headers are installed.