popping on decel

i have a 2000 xr650r. i have a white bros e series. i have been getting popping on decel. it has a honda power up kit. how can i get rid of the popping? rejet?

your running lean brotha! :cry: It is more than likely your jetting, you need to richen it up a little. If your filter is filthy or over oiled it will pop too. Thats all! :cry:

How about backfiring :cry: when I chop the throttle?

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