I was out on my one today for about 2 hours and it was popping on the overrun at times aswell as anytime I used the quickshifter.I rather like the sound.My one is is a 15 reg motorsport with the akrapovic can with baffle removed.
This can also be caused by poor seal between the silencer and the header. A good coat of anti seize can help. I love the quick shift pop going up the gears. I like to time it just after I pass someone who deserves it.
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