Removing rear O2 sensor on 01-newer PCMs -- Things you should know

[FoSHO99]

I hav a 98 gp gtp with 3.4 pully a cai, flowmasters and jus added headers and had the converter removed ... could i run a chance of havin this problem? Or does this only happen on 01+ cars? I havent tuned for the headers yet and the check engine lights on bc of the cat i knw and im waitin for the o2 sensor extender wire bc of the headers so im actually not runnin any o2's at all ... I took the car dwn the track and i ran 14.2 @ 97 yea i knw not smart but was jus curious .. By gettin a tune and the o2 plugged back in is there a chance of 13's? my best without the headers was 14.0 @ 96 mph

That sounds really stupid and I dont think i've heard anybody driving their car around with no 02 sensors and absolutely never heard anyone racing at the track with no 02 sensors. You should be able to just delete the codes for the bank 2 sensor or get a 02 sim. Shouldn't have a problem with this 01+ crap.

[FoSHO99]

Well, along with what DOHCZ34 said, I think I am going to try and get a stock 2000 .bin file for my powrtuner and import everything i can from my current 01 tune and go from there. I have a 02 sim. installed but I think it crapped out on me because the codes are coming back up and im getting horrible gas mileage, the 02 sim. still flashes like its working.

[Sinister Performance]

Well, along with what DOHCZ34 said, I think I am going to try and get a stock 2000 .bin file for my powrtuner and import everything i can from my current 01 tune and go from there. I have a 02 sim. installed but I think it crapped out on me because the codes are coming back up and im getting horrible gas mileage, the 02 sim. still flashes like its working.

I think other people have tried the O2 sim before and it didn't fix this issue either.