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Underdrive Pulley do or do not?????

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Old 05-08-2009, 09:02 PM
  #26  
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I'm happy with my AP
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Old 08-11-2011, 09:13 PM
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the under drive is going to give you 1 maybe 3 hp to the tire the ting that he really does is to help the engine rev faster reducing the weight in the engine search in you tube there is a video of a rx8 with out reeving up and the same one after the installation of the pulleys and there is a big difference in the speed that revs but not a gain in hp the car will get tho his peak in torque and hp faster
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Old 08-12-2011, 12:47 PM
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Racing beat intake, exhaust, and flash. Biggest difference you'll notice.
Car pulls hard to 9,300!
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Old 05-19-2012, 06:09 PM
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Having pullies gives free horsepower plus better gas mileage. Atleast with my cobra it does. I'd ghink it'd dothe same for rx-8s.
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Old 05-19-2012, 06:17 PM
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Old 05-19-2012, 06:53 PM
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Originally Posted by reaperschild
Having pullies gives free horsepower plus better gas mileage. Atleast with my cobra it does. I'd ghink it'd dothe same for rx-8s.

......
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