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MAF sensor cleaning on 2003 turbo

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I am having real trouble getting the MAF sensors out on my 2003 cayenne turbo. They look like torx security bits #20 or #25 but I just can't get my bits to fit.

I can get the MAF out easy on both my 996's(N/A and Turbo), they have torx security #20's from memory. (Tip after removing them replace them with normal phillips head screws)

Am I missing something? I just cleaned the MAF on my 996 turbo and man what a difference, solved all sorts of crazy hesitation problems and feels like it liberated an extra 50 HP!.

Want to try the same on the cayenne, but feel like a bit of a fool that removing four screws has (pardon the pun) screwed me!

Can anyone who has removed them on the turbo comment?



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Cayenne, 987 and 997 use no longer TORKX, which have 6 points. They use KLANN KL-4064-601 K which is a set of 9 small keys, they look the same but have only 5 points. The reason they give is that the MAF is available only as a unit with the housing, just like the older 964 and 993. The MAF should be calibrated inside the housing according Bosch, but may also commercial reasons. KLANN keys are rather hard to find.

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On the internet they seem to be more commonly known as 5 point torx security often prefixed by the letter "TS" rather than "TX" like the normal torx.

I have located several sets on e-bay, so I'll get a set and see how I go.



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