N20 A/f
i got my car tuned with the bottle when i had a cutout, now i have borla .. it was reading like 11.0 compared to my 12.5 -6 that it was with the cutout ... is this bad ?
If your saying that the wideband shows an 11 now with full exhaust and used to show 12.5 with cutouts, then your ok. but I would "?" the validity of the reading with the cutouts, shouldnt move that much, might have drawn air by the wideband with the cutouts open throwing off the readings.

