Reprogramming ECU to turn off O2 Sensors

[Topless]

Both shops are mistaken because the o2 sensors aft of the cats only sniff for emissions and don't affect mixture trims. I would disconnect the batt again for one minute to reset the DME and see what you get. Is it possible you crossed the pos/neg terminals and fried your DME?

[truegearhead]

Originally Posted by Topless

Both shops are mistaken because the o2 sensors aft of the cats only sniff for emissions and don't affect mixture trims. I would disconnect the batt again for one minute to reset the DME and see what you get. Is it possible you crossed the pos/neg terminals and fried your DME?

No the cords don't reach. This happened once before a month ago and I towed the car in and it was diagnosed with a bad air/oil separater. After the fix it ran, then once I dissconnected the battery again..same thing all over again. I've dissconnected it numerous times and connected them to discharge and capacitance..no luck. Very odd problem. Are you sure the aft O2's don't effect mix?

[Brad Roberts]

Any shop with a PSTII or Piwis can flash it with a "ROW" tune.

It turns off the secondary 02's and does away with the secondary air pump.

Topless is correct, just HANG THE secodary 02's under the car in clean air. They are looking at CAT efficiency. Plug them back in and leave them in the trunk somewhere.. seriously.. plug them back in and let them *see* clean air.

They are heated, so secure them so they don't touch carpet. Up against plastic is fine.

[truegearhead]

Originally Posted by Brad Roberts

Any shop with a PSTII or Piwis can flash it with a "ROW" tune.

It turns off the secondary 02's and does away with the secondary air pump.

Topless is correct, just HANG THE secodary 02's under the car in clean air. They are looking at CAT efficiency. Plug them back in and leave them in the trunk somewhere.. seriously.. plug them back in and let them *see* clean air.

They are heated, so secure them so they don't touch carpet. Up against plastic is fine.

There's no way this could resolve the missfire problem right. I just pulled the codes again and now it's also reporting o2 faults on all 4, I guess that's a side effect of the misfires.

[Brad Roberts]

How far is Richmond from Charlottesville? Ex factory tech has a shop there.

I'd love to hear from these techs at your local shops why its misfiring because of the CATS.. LOL

I'd actually use the words "shut up" in front of adults.. lol

Was there *anything* else done that you are neglecting to tell us?

I mean **anything** done to the car??