How to reset PCM after removing cats?
Registered User
Joined: Sep 2002
Posts: 191
From: El Paso, Texas
Originally posted by Dark Angel
I believe you will eoiither have to program the SES light out with LS1 edit or get o2 sims for the rear o2's.
I believe you will eoiither have to program the SES light out with LS1 edit or get o2 sims for the rear o2's.
this is about the only way. if you only reset the light will keep comming on cause it is reading the wrong mixture after the cats. ps the comuter trys to ajust and will make you car run worse.
Registered User
Joined: Apr 2001
Posts: 674
From: Sac, CA
Originally posted by 2000TA
this is about the only way. if you only reset the light will keep comming on cause it is reading the wrong mixture after the cats. ps the comuter trys to ajust and will make you car run worse.
this is about the only way. if you only reset the light will keep comming on cause it is reading the wrong mixture after the cats. ps the comuter trys to ajust and will make you car run worse.
Besides ... think about it. If the rear O2s were required to provide input to the PCM ... sims would fail because the PCM is see constant input relative to the front O2s. And total elimination of the rear O2s, via edit, would result in failure ... assuming they did any thing other than validate the CAT operation ... M
Registered User
Joined: Sep 2002
Posts: 191
From: El Paso, Texas
Originally posted by V6toZ28
If the rear O2 failures make you run worse .... you couldn't prove it by me ... My times and mph improved with my cats gone and no sims ... later when I added sims, other than the SES lite going off there was no additional improvement ...
Besides ... think about it. If the rear O2s were required to provide input to the PCM ... sims would fail because the PCM is see constant input relative to the front O2s. And total elimination of the rear O2s, via edit, would result in failure ... assuming they did any thing other than validate the CAT operation ... M
If the rear O2 failures make you run worse .... you couldn't prove it by me ... My times and mph improved with my cats gone and no sims ... later when I added sims, other than the SES lite going off there was no additional improvement ...
Besides ... think about it. If the rear O2s were required to provide input to the PCM ... sims would fail because the PCM is see constant input relative to the front O2s. And total elimination of the rear O2s, via edit, would result in failure ... assuming they did any thing other than validate the CAT operation ... M
Sorry my mistake I was combining the function of the front and rear sensors
Thread
Thread Starter
Forum
Replies
Last Post
armedtrigger
LT1 Based Engine Tech
10
Feb 24, 2015 08:30 PM
dbusch22
LT1 Based Engine Tech
2
Jan 5, 2015 07:14 PM