pretty straight forward question but I seem to be getting mixed answers in all my searching. In order for me to pass emissions I cannot have any active DTC's and have to have readiness monitors set.
the truck will be running a 3Bar OS, do I still need to fail the MAF manually (DTC's set to fail on first error, and MAF hz's set to 0)? A few posts have said that it didn't matter with the custom OS but have seen people suggest that I had better fail it manually just in case.
I don't care if the DTC's are in the pcm 364 days of the year but I have to have them off for that stupid test. if I don't HAVE to fail the MAF the that would be ideal.