E46Fanatics - View Single Post - Water Pump & Pulleys Help!
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Old 07-10-2010, 01:32 AM   #10
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Join Date: Apr 2009
Location: Tampa, FL
Posts: 296
My Ride: '05 325i
Originally Posted by i0kr1sol View Post
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.
its really only dangerous if you underdrive the alternator when you have a system in your car.
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