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Hi! i have a 09 monster1100 love this bike!Except popping on deceleration,bike all stock,just did first service,technician saying it normal,any advise???? thank you.
 

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My 99 carby does it and I like the sound. Its just a little unburned fuel sneaking out the exhaust valve or igniting in the exhaust system. As far as I know its pretty common in motors that have relatively aggressive valve and ignition timing. I have a custom performance cam in my 55 sedan (383 SBC) and it will also pop and gurgle out the exhaust when I down shift to decelerate.
 

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Hi! i have a 09 monster1100 love this bike!Except popping on deceleration,bike all stock,just did first service,technician saying it normal,any advise???? thank you.
My S2R800 did it when I ran regular but not when I ran Premium but I had Arrow Exhaust, Open Airbox and a Power Commander. I was told the same as others, it's normal.
 
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