Quote:
Originally Posted by JNoSol
To be safe, clean your MAF with MAF cleaner spray. A dirty MAF (exposed to dust during install) sometimes can cause CELs. Intakes should not cause CELs, especially these are dry filters. Heavily oiled filters like BMC drop in has known to cause CELs on the M5s.
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I've cleaned the MAF sensors twice but the CEL didn't go away. The combo of the tune and the intakes was the culprit for me.