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					Originally Posted by Brad Roberts  Tommy, 
you want to use the CaymanS MAF housing. It holds the same MAF your 2000 car runs.
 
I happened to have one close to my desk. I'll show you the CaymanS MAF holder and boot, then show you the 986 (side by side)
   
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If you use a larger MAF housing diameter without reprogramming or otherwise changing the signal, the DME won't be calculating air volume correctly.  The car will run leaner than the DME thinks it is.