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the hissing noise is what makes me think it is a vacuum leak too.
i'm not really sure how I check for this. i guess i can look around for something that is hissing really loud if the engine cover is off? i don't really know what to look for.
i may just take it to the dealer and let them look at it.
i don't want to waste my time messing with the MAF if that's probably not it. i found the instructions online for removing/cleaning the MAF - but since my car is hissing - it would make sense that THAT is probably the problem. i'd look at vacuum leaks FIRST, and then if there is still a CEL later - then consider the MAF.
is there an easy way to check for a vacuum leak? i saw an online diagram of the intake system and it looks like a spider web of tubes, etc. i wouldn't know where to start.
at least I know it's nothing catastrophic, and I can have some peace of mind that a day or two at the dealer will result in a quick fix.
i could also use this opportunity to ditch the dealer (who the former owner used / my dad) and find a nice independent porsche mechanic closer to where I live. my dad lives 5 min from the dealer - but 40-50 miles from ME. there is no close by dealer. i'm sure there is an independent guy closer than that!
prices are probably more reasonable too.
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