[rowsdower]

To clarify my earlier post that was quoted, my idle issue started the day I had headers installed, not the day I installed the tune. I thought the tune would fix it, but it didn’t make any difference with the idle. I replaced MAF, MAP, eccentric shaft sensor, coils, and the rear O2 sensors, cleaned and swapped VANOS solenoids, nothing worked. Unplugging an O2 sensor (front or rear) fixes it, as does resetting adaptations, so I know it’s sensor related.

I would expect that an N51 car with just a tune or MILVs + tune would not have idle issues since mine seem to be related to the headers.