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      08-31-2013, 02:16 PM   #8
tennis_pr0
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Drives: 2--7 BMW 335i coupe
Join Date: Apr 2013
Location: Philadelphia

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Rotten egg smell comes from gasoline. If you have high flow cats, when accelerating hard the cats are not burning as much fuel, so that is probably what the rotten egg smell ks. Normal. Can anyone else chime in on this if i am wrong...
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