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No power gain from Underdrive Pulley?...
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01-21-2017, 07:55 PM
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Lapister
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Join Date: Dec 2014
Location: Pasadena
Posts: 261
That UK guys video on his tip/Dyno after installing the UDP pretty much backs up Steve Tinkers post. It frees up HP but doesn't give you anymore than what you had. In his case before /after dynoed the same. Youtube- Road and race.
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