Quote:
Originally Posted by Jeef
Assuming you are all not in Cali if you are passing with catless.
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Correct I am in AZ, AZ allows for 1 module to be incomplete (not ready). The stage 2+ MHD tune places the cat as unavailable. In a sense it hides it. Basically, you after you install the tune (selecting cat less DP on the tune) it then hides that information and which doesn't alert the CEL.
After 1 drive cycle the vehicle is ready for evaluation. Keep in mind that the drive cycle must include a cold start in order to evaluate the O2 sensor heater.
With MHD when you check codes you can see all parameters of the emissions readiness systems. This helps so you know when you are ready for evaluation.