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templarklimek · 10-19-2013, 11:18 PM

Gents, i've not seen any usage of these on z4M's. I used them on my e92 M3. Is their a reason they aren't popular on out Z4's? 11 hp gain.

http://www.beastpower.com/p/bmw/vac-...VC-BE3M-S54-PK

10-19-2013, 11:18 PM	#1
templarklimek templarklimek 142 Rep 868 Posts Drives: 15' X6M, 12' R8 V10, Join Date: Jun 2008 Location: Houston Texas iTrader: (0)	underdrive pulleys? Gents, i've not seen any usage of these on z4M's. I used them on my e92 M3. Is their a reason they aren't popular on out Z4's? 11 hp gain. http://www.beastpower.com/p/bmw/vac-...VC-BE3M-S54-PK
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