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Yoshimura GP Magnum pipe

367 views 12 replies 5 participants last post by  Oldgoldie  
#1 ·
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Wow, what a difference, nice low thump but not loud, at 3-5,000 rpm it's so much more keen and no hesitancy, just waiting for a DNA filter now.
 
#13 ·
Thanks Coljopy,
Richard Moore's comment make the most sense to me
"Those instructions are for a workshop resetting the ECU to factory settings, after running the bike with an exhaust extraction system. Not for the user after fitting an exhaust or air filter. All you have to do is take the bike out for a couple of runs at different throttle openings"