Quote:
Originally Posted by Ashikabi
That's gonna depend on the kit. My flex fuel kit retained both o2 sensors and used a third input from the ECA. I believe the newer Delicious kits use the rear O2 plug for the ECA input. So depending on the kit, I might still be right.
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Okay, I'll give you that. But since the OP originally said that he was getting upstream O2 related codes and didn't mention any downstream related codes, that tells me that the tuner may have disabled the downstream codes from being able to trigger a CEL.
One thing the OP didn't mention though, is if the headers that the seller had in there before he sold it were catted or not? If they were not, I would tend to think that the tuner used the O2 input instead of the EVAP input....Which is one reason why the OP should get back with some questions to the seller.