Tune for rear O2s???

**Ric** · 08-14-2005, 08:34 PM

Is it possible for a feller to tune the rear O2s to where you can run LTs and cats without throwing a code??? I'd like to run a set into a catted Y just to keep the car actually(almost) legal, but still know if there was ever a problem with either of the cats.

AnotherScreenName · 08-19-2005, 08:53 AM

Yes. HPTuners will do it, DHP will do it. I imagine LS1Edit would too.

I have HPT and there you can turn off the error report or the SES light or both.

**Ric** · 08-19-2005, 02:19 PM

Cool.

Now, is there a way to adjust the signal to the rear O2s to where you wouldn't have to turn anything off... as in, tuning the O2s to allow for headers, yet still throw a code if the cats get plugged???

**foff667** · 08-22-2005, 05:55 AM

not that i know of.

**wait4me** · 08-26-2005, 02:25 PM

You can set the limits of the o2 switching to allow for slower transitions and not be so picky to set the code, but that seems like a waste considering that they are purely for emissions only and not performance and if you have a cat or not doesnt make a difference if you have rear o2s or not...