Quote:
Originally Posted by Homeoboxter
It all makes sense, just one more thing to consider: changing valve timing not only affects performance but influences emission directly as well. So if it`s not working, that on its own should trigger CEL. When I did this test, CEL lit up when I hit the throttle.
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Yes if the valve timing change cannot be compensated for with fuel trims and ignition timing. It would most likely set the CEL on the first event.
Interesting piece of kit that OBDII