Well, I spent $177.47 on the Wiseco fuel tuner and installed it this weekend. Very simple to install - take off the tank, remove the rear cylinder FI harness, plug in new harness and plug old harness into new one. Same on front cylinder, only instead of directly onto the injector, it hooks up to a pigtail connector and leads to the injector. Plug in, attach to negative terminal on the battery, velcro to inside of side cover and I was done - less than one hour to take off the tank, install and replace the tank. Bike ran really good - seems to have cured the surging and stumbling at constant throttle, and doesnt sound quite as grumbly when letting off the gas. Has a little hiccup when going full throttle - just needs another small adjustment... Will do it next time I ride it!
If anyone is experiencing similar problems, do NOT pay $299+ for a fuel tuner. I got mine off Amazon shipped for $177!
2003 Vegas - straight pipes, Big Sucker air filter kit, black powder coated everything - foot controls, handlebars, clutch and brake housing, fork lowers, luggage rack, wheels, digital speedo with powder coated housing. Relocated key switch, red plug wires. Mustang solo seat. LED ring blinkers in front. Black DEI pipe wrap.