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underdrive pulleys?

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Old Oct 25, 2011 | 05:27 PM
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My03fx4's Avatar
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Default underdrive pulleys?

I have and 03 scab with the 5.4 i was wondering how much more power to expect from underdrive pulleys and an efan? Plus recomendations
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Old Oct 25, 2011 | 05:34 PM
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Combined should yield 15+hp at WOT.

http://www.troyerperformance.com/cgi...link=storelist
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