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      01-23-2012, 02:59 AM   #14
Z4MGermany
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Germany
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Drives: Z4M
Join Date: Jan 2012
Location: Berlin

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KKS delibers a button or remote to control the exhaust .
The stock exhaust valves open/close at certain rpms or WOT so you can't control them the same way like the KKS exhaust.
That's the big difference between other bolt-on exhausts and this one.

The weight is same as stock as far as I can tell.
Appreciate 0