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Author Message   Dmc650x Posted on Saturday, September 15, 2012 - 12:13 pm:        My 99 S3T has run rough since I purchased it a year ago. It feels like it is dropping a cylinder. It is worst in the warm up circuit and gets a little better as the bike comes up to temperature. I notice it most in the closed circuit and the higher the rpm the less noticeable the miss. At freeway speeds and around 4000 rpm the miss is no longer noticeable. These are things I have tried. New o2 sensor,new plugs,new intake seals,seafoam in fuel,reset TPS, checked ground connections.I also downloaded the race maps and the buell carbon race filter along with V&H exhaust. None of these things made even the slightest difference. When I ran ECM spy diagnostics the only thing that came up was a past history code saying there had been an ignition coil short to ground. Things I haven't tried. Plug wires, New ignition coil,head temp sensor. I just turned 20K miles and drive the bike daily. Any ideas would be helpful? Thanks   Thejosh Posted on Saturday, September 15, 2012 - 04:35 pm:        Try a TPS Reset while its hot.

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