Thread: Another vote for under drive pulley
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Old 10-10-2013, 01:42 PM   #9
thstone
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Quote:
Originally Posted by PorscheBound View Post
How much more HP are we talking?
In this thread (fourth post), engine builder Jake Raby says that he has measured +5HP at the rear wheels when using a UDP.

http://986forum.com/forums/general-discussions/37563-underdrive-pulley-questions.html
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