I installed a TFI kit the other day on my 05 Night Train and it was a breeze to do. I am very comfortable working on older HDs (Pans, Shovel, EVOs) and this being my first FI TwinCam- I was a little nervous it would be a pain in the rear. After watching Dobecks video I did the following: - Remove seat - Remove neg battery cable - Disconnect tank fuel line at the quick connect coupling* - Remove rear tank bolt and raise tank (supported with wooden block) - Remove AC cover as I have large hands - Disconnect injector harness - Instal the TFI harness inline from the factory harness and run the cables in the stock wiring harness routing spot - Hook up ground strap of TFI while I re-connected the neg. cable - Route all the wires nice and neat - Drop and re-connect tank - Verify settings per Dobecks instructions - Fire up the bike and check for leaks. No leaks found and verify LEDs are working as stated in the instructions. All good. - Strap seat back on and take for a test ride. After a few easy miles to fully warm the bike up I started pouring on more throttle. The initial slight bog I had under hard throttle is gone. Decell pops are nearly completely gone (VERY slight every once in a while) Seat of the pants dyno says bike is pulling harder. I can run the gears out a little farther and don't have to downshift near as much. The bike has 9k on it with an SE backing plate, K&N filter, Stage 1 download and SEII exhaust. Prior to the TFI it was pretty dang hot and didn't pull as well as I thought it should. A little stumble here and there, occaisional pops at steady cruise and the ever annoying pops on decell were all indicating a lean condition. The Stage 1download was on the bike prior to me buying it. Knowing how MY bike ran with it- I can say it's good for raising the rpm limit and that's it. I was truly unhappy with how it ran. The TFI made an immediate change in all of that. For the basic work my bike has had done- I can't see the need for anything more than what this provides but- I am not out for the last few ponies either. I will report back what my mileage is (38-44mpg prior to this) This is old news for most of you but for other new folks that are thinking about these- I say go for it. Money well spent.