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Old 09-30-2008 | 04:01 PM
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JB COMP
 
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Default RE: Difference between GO 3-5-7 ports?


ORIGINAL: supermod

thanks for stateing the obivious jbi was woundering with one revs the highest

Sorry, but I couldn't resist.

It all has to do with timing. The higher the exhaust timing is (to a point) the more (usually) top end it has.