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Unread 11-30-2011, 01:50 PM   #7
cluffenstein
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Join Date: Jan 2007
Location: Chicago IL
Posts: 2,704
Rep: 61 cluffenstein will become famous soon enough
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Quote:
Originally Posted by Tyrker View Post
Underdrive pulley. Gives you the HP and increases fuel efficiency . Should give 10-14 and should be around $300 (this is however for my own car, but using it as a base as it shouldn't be that much different for your car)
Unless installed by a professional, UDP's will very easily f**k your motor up on a Focus. Had I not had that warning, I would have run one. (this was from a guy who builds Focus motors every day for racing)
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Quote:
Originally Posted by TestEcull
He may have ruined his cylinder walls and compression wings.
Quote:
Originally Posted by wierdo124
Yeah. Should hold up fine, long as you don't drive like a primate.

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