Forgot to mention, keep your original MAF if you still have it. I would put it back on the vehicle.

Unless you purchased a Siemens/VDO MAF from a reliable source, if what you purchased was a no name or too cheap to be true, chances are it is an Asian counterfeit that may make matters worse.

I NEVER throw away a MAF, but I also rarely change them either. MAF's are replaced far too often when they are good. Unless you have Lean codes at highway cruise, chances are the original MAF was fine.

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2008 4.8i Black with Tabacco. Black Y-spoke wheels and shadowline trim.