Hello, New guy here with a perplexing problem. I have a 2003 FLHTCUI that suddenly started to miss at most RPM settings. I have replaced the fuel filter, plugs, plug wires, inspected and cleaned the crank position sensor and tried running the bike with every other engine sensor. When disconnecting the MAP sensor the missing stops and the bike runs well, although not as nicely as with it working. I changed the MAP sensor but no help and the voltage checks good. I ran bypass wires from the sensor terminal to the ECM, no help. I'm about to call uncle but just read about some folks issues with exhaust leaks. I may have a crack in the Y fitting just aft of the rear cylinder. Any chance that can cause an intermittent miss? Last note, it seems to be less of an issue at higher RPM (3,000+) while not under load. Thanks!