We are dealing with different platforms here. I have an 03 Z and was tuned with Uprev with HFC's for 2 years and passed each year, however I still would have at least two sensors n/a or unsupported but it was enough to pass.
the third year, I swapped the HFC's for ART pipes and re-tuned one of 5 maps. I went for inspection and failed that same year.
The reasons are twofold:
1. subsequent years were there was unsupported or n/a codes(at least two)
2. Rom was flashed i.e. tuned. Massachusetts now knows anytime a ROM has flashed as it is not the original manufacturer code/serial number. --This was told to me directly by the inspector at the Mac center after I went for re-inspection and de-tuned and removed the ART pipes.
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