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View Full Version : sputtering between 3500 and 4000 rpm



batman6669
06-22-2009, 03:42 AM
Ok so i did an airbox delete,breather reroute exhaust gut, and disconnected the servo. The bike runs mint over 4000rpm but sputters below 4000. I have an 04 xb 12scg . Do i need Mike @xopti to help with the ecm and who wants to lend me a spy cable? HELP!!!

Stevenc150
06-22-2009, 04:44 AM
Checked your plugs already?

batman6669
06-22-2009, 10:13 AM
not yet, any suggestions on plugs.

Stevenc150
06-22-2009, 02:06 PM
NGK Iridium (DCPR9EIX) [up]

fahren
06-23-2009, 01:58 PM
Have you run long enough in closed loop for the AFV to re-adjust to the new world order of your bike?
Did a TPS reset?
Getting any trouble codes?
Check plug wires/connections - they could have been jostled in the re-route operation.