Draklia
Well-Known Member
Good luck finding an aftermarket tune that can clear the O2 and HO2 monitors that the smog machine verifies as passing through the OBD2 connection. It may run just as clean as OEM, but there is some magic that happens when you have OEM support when writing a tune, it seems the aftermarket tuning guys are still guessing at how to make it run “just right” to get these two monitors to pass the test.I don't think California will see any part of a tune when you take the car for smog. If the kit is carb approved and you leave the factory cats you should be golden.
Smog these days is a joke. They just plug into obd2 and look for codes and CEL's.
Aftermarket tune will probably run cleaner than the canned tune.
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