Quote:
Originally Posted by TempeAndy
This is with the factory downpipes and cats installed; only mod on the vehicle is the Velos tune. And no CEL or other signs that the engine isn't running flawlessly.
Evidently -- while the engine runs -- it keeps a history of measurements that are required for the OBD-based emissions test to run. Somehow that history of O2 sensor measurements are missing or disabled.
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Is it possible Velos sent you their stage 2+ tune?