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Old 11-13-2012, 11:33 PM   #1981
NordieBoy
Armature speller
 
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Joined: Dec 2006
Location: Kiwiland
Oddometer: 7,095
Quote:
Originally Posted by StuartV View Post
What is ProTune mode?
A bigger main jet and a different needle profile.
Improves the bottom end considerably.
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