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      07-04-2017, 02:26 PM   #4
MuffinFlavored
Second Lieutenant
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Drives: 2014 F10 M5 MT
Join Date: Apr 2017
Location: N/A

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How much of an improvement sound wise did you see? Any drone? I know it's a popular brand but I'd like your verdict.

I've read that sometimes, power actually dips because of the smaller amount of restriction?

Would you need to combine this with some downpipes to have a fully catless system or am I mistaken?
Appreciate 0