I know of two guys in my area with high-mileage bikes around the same model year who swapped to carbs - what is it exactly about the MM fuel injection system that is so bad, if I may be so bold to ask?
1996 Ultra Classic upgrades
You don't find much on 96' F.I. models when it comes to upgrading the fuel and, exhaust so maybe this will help someone out down the road. I've installed a WISECO (pn# FMC-051) fuel controller, Wild Pigs slash down mufflers with the 2 1/4" baffles (recommended by them for my set up considering a future mild cam swap), V&H true duals and, a K&N air filter. With the Wiseco fuel controller tuning it was simple. Same principle as tuning a carb only it's just pressing buttons rather than changing jets. Read the plugs and, feel it out.... no problems. The whole set up was pretty inexpensive and well worth the time and $$$. Haven't had it dynoed but, by the feel it prob gained a little. It climbs the rpms a little faster I believe and, cruises just fine. The sound of the Wild Pigs mufflers is better to me than most more expensive ones. It's a good hearty sound and, with the 2 1/4" baffles it's probably more volume than most on a UC would want but, for me and being in Florida where drivers are deaf it's a beautiful sound that gets many compliments. Is it true that there are limitations to the early F.I.? Yes. If all you want is some mild performance upgrades and, to smooth out the pull then it can be done fairly cheap. Hope this will help someone else out when searching like I did for options on early F.I. models.
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I know of two guys in my area with high-mileage bikes around the same model year who swapped to carbs - what is it exactly about the MM fuel injection system that is so bad, if I may be so bold to ask?
I wouldn't say bad, just limited number of people to work and tune them properly.
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The main issue with the '95 - '96 H-D MM efi is that the ECM isn't flashable. Not re-programmable. They can be upgraded with a '97> ECM if one can be found. S&S has a replacement ECM also that is user programmable with the included CD and a laptop.
The problem most have with it is the ability to tune for aftermarket parts. Keeping it tuned can also be an issue if you don't know how. There was a youtube video I ran across on how to tune it that was easy to follow using a multi meter. Over time apparently the idle set screws like to move. My bike is low mileage for a '96 model at just over 20k so I've not had any of the issues that some have had. From what I understand either you are lucky or, unlucky with the old MM F.I. Until I have major issues with that system I'll keep on rolling. When the time comes; if it ever does, I'll go to a carb. With a little research I was able to get the results I was looking for out of the stock EVO.
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