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Modular 4.6L Tech For all your 1996-2005+ 2V, 3V, and 4V modular motor needs.

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Old 10-13-2004, 02:34 PM   #1 (permalink)
njblackstang
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Join Date: Oct 2004
Location: Aberdeen, NJ
Posts: 8
Default Is this normal??

Hey guys. I have a upr o/r x pipe with a mac cat back exhaust. Recently I've noticed that when downshifting the exhaust note sounds like its barking. It has been hitting something underneath ( a clearance problem no doubt). Would installing a mass air meter and CAI change the sound of the exhaust (which i've done recently)? Any thoughts would be appreciated.
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