Thread: Underdrive Pulleys?
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      11-25-2012, 04:14 PM   #4
1slowbmw
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Drives: BMW e90
Join Date: Nov 2012
Location: Long Island

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Not worth doing, we have an electric water pump and the alternator runs to many things to be under drivin without issues, the AC compressor also disengages under WOT.
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