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Old 07-07-2010, 01:40 AM   #2
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Join Date: Feb 2007
Location: NewYork
Posts: 596
My Ride: 330ci
You wont gain power with a 'high performance' water pump.

There are two sides in every story, search about underdrive pulleys. Some say the difference is negligible, some even say their dangerous.

And a lot of people go for the Stewart Water Pump for upgrading their water pumps.
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