I've had detonation like sounds on deceleration before. I tried jetting, needle position etc.. It ended up that the slide was set too high with the idle screw. Moral of my story is get the bike to idle with the slide as low as possible.
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Noah
2000 EC250 with 2011 transformation kit, KYB SSS forks, MN street title
16' Ski-Doo XS Renegade X 1200 4T
16' Specialized Fatboy trail
02' ZRX 1200r R.I.P.
72' Olds 500ci, Batten Heads, Street/Drag car, former CarCraft magazine centerfold (has-been  )
15' TW200
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