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^^^ yea same here, but at the time I didn't know about the PNP they have for the o2 delete. The o2 simulator is very easy to wire up though, and its only 4 wires so its not too awful bad splicing into the factory wiring plus I taped all of my wiring back up and mounted the chip looking part of the o2 simulator inside the ecu housing so it all pretty much looks factory done. Also what led me to believing it was the o2 sensor itself and not the o2 simulator was the fact it only threw up one o2 sensor code where as if the o2 simulator wasnt working right it should have thrown up 2 codes, one for each o2 sensor B1 S2 and B2 S2.