Originally Posted by vasillalov
This is the problem here! Cobb provides O2 code suppression ONLY for their S2+ maps. If you want to use a lower map and still have O2 code suppression, you'll need to use ATR and quickly generate your own map.
Bingo! Btw, I've left in my DPfix for over a year running cobb s2+ no issues with afr whatsoever.