Join Date: May 2010
Location: Central Indiana
Sorry....realize now I didn't offer enough specifics so, here goes: Bought the bike new in 2010. Kept up on mtce. Replaced ECM under warranty. At 19k, did throttle mod, Thunder Air kit, (just the adapter plate that bolts to the throttle body, using the oem cover over K &N filter), Cobra Triovals and Dynojet Power Commander V, (using David Sheek's proven map). Problem started about 28k miles, roughly. 30k on now.
This spring: new battery, cleaned Powercommander electrical contacts, cleaned K & N filter, installed a clean version of David's map, fresh gas in tank. Problem persists. Happens in all gears...or at least 1-5, for sure. More pronounced the harder I accelerate.....if I open the throttle wide and hold it steady, it will accel smoothly, jump, accel smoothly, jump....up to 4 times before it gets to steady speed. Point well taken that I should try disconnecting the Powercommander to find/eliminate that as a cause and will report back... Thanks all who asked for further info!