Quote:
Originally Posted by Coheed
Please elaborate. This car doesn't say "ready", even with factory cat in place?
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There is a set of readyness checks that the ECU goes through every time the ECU is reset. It will either report "Complete" or "Incomplete" if the system is present on the car ("Unavailable" if not present). Normally, the checks are complete by 100 miles. On the car I saw, the O2 system check never hits the "Complete" state. So there might be some ECU trickery on the O2 system to prevent rich/lean CEL's. This occurred on both Visconti's and Perrin's SC tune. If you were to hook up an emissions scanner, it would give you an incomplete and the shop would tell you to keep driving until it completes.
I'm not sure if this is inherent on all FI tunes. Anyone with a turbo or other car care to try the readyness scan on their cars?