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      03-04-2009, 06:08 PM   #1
Drives: 2008 E90 M3
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Drone wihtout 2nd cats?

Has anyone experienced any additional drone after removing the secoundary cats?

If so how bad, and what is your setup?

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      03-04-2009, 10:24 PM   #2
Drives: 135i, 996tt, e60 M5, tundra
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The cats dont determine whether you have drone or not.
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      03-08-2009, 05:27 PM   #3
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no drone with stock mufflers
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