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  1. P04DB CEL code after intake install

    Mustang EcoBoost Discussions
    So long story short I installed the K&N 57 series CAI and my CEL came on a couple hours after. I’ve doubled check connections. Don’t want to clear the code , the intakes paperwork states it shouldn’t throw a CEL. need more info on how to fix asap
  2. pcv to catch can to vent to atmosphere?

    Mustang EcoBoost Performance
    I have seen that there are some people out there that are venting to atmosphere after the catch can instead of plugging back into the intake manifold. i would assume this would completely negate carbon/gunk build up in the head and/or intake. other than some efficiency of the pcv system being...
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