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Old 05-28-2011, 12:20 PM
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Sheriff John Sheriff John is offline
Motorized Bicycle Member
Join Date: Jan 2011
Location: San Diego
Posts: 28
Default Re: I REALLY need more power and speed

Ok, so I decided to do two things.

1. The piston skirt mod
2. I want toopen the exhaust port. How much do I do it?

If I do both of these, what will I gain in performance?
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