I have an 05 FXD that runs fine at low RPM but as soon as you hit about 3500 RPM it starts to break up. It is fuel injected. I checked the coil and wires and they are showing the correct readings for ohms. I have changed the plugs and checked for intake leaks. Does anyone have any idea what may be causing this? I have ordered the diagnostic manuals but didnt know if someone on here had run into this problem. Any help would be greatly appreciated. Thank you, James.