my sr has been playing up for a while and ive finally had enough recently it started to bog, then my airfilter fell off while riding (was REALLY bad) then i put a malossi filter on it and was a bit better but still bogging. when i bought the bike it had a k n filter and everything standard but dont know if it had been upjetted so took out the 82 jet and put a 95 in (also has a pm59) and hasnt changed now the bikes gone bonkers when i start it up, it drives fine for bout 5 mins then it doesnt rev properly and splutters and backfires sounds disgusting and tops out around 25-30mph when i have the throttle pinned back, then when it wants to it will just shoot off fine, ill let go of the throttle and splutters and backfires, the next set off lights ill stop and the same thing will happen sometimes it wont move atall and make that brrrr sound of wen its bogging then it will react soon after :blink: i have no clue and would really like some help so i know what to spend my money on it occured to me it might be something within the ignition system? the bore? or something else please help if this has happened to someone before :beg: