God I hate posting this here: Another MM EFI question. SORRY ahead of time.
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Cruiser
Joined: Nov 2006
Posts: 206
Likes: 5
God I hate posting this here: Another MM EFI question. SORRY ahead of time.
Ok, here goes. I just picked up a 1998 Ultra Classic with EFI. Bike runs great. 38,000 miles. I have TWO issues I want to address this winter. Bike is bone stock except KN Filter that was apparently put on in 1998!!! Issue one: bike is too damn quiet. I want to put on a Rush exhaust with the ceramic coating. Two: I am going to replace the inner cam bearing with a Torrington, and when I do that I will put in the EV27 or 13 cam. So... are my days of flawless EFI over? Do you think this combo will lean the bike out? I am pretty sharp with complicated systems. I have the Service Manual, and am studying the EFI. My gut instinct so far, and after searching all the links here on the forum is that this system won't handle any drastic changes. Has anyone had actual experience using their EFI with exhaust and cam changes. Thanks a bunch for the replies. Jethro
No need to apologize......I can't answer your question either.....
Seasoned HDF Member
Joined: Nov 2010
Posts: 17,548
Likes: 7,164
From: Oxford, Nc
I have a Stage II 95" Big Bore with MM Injection and the bike still runs fine at 150,000 miles. That EV 27 cam is hardly significant enough to warrant a tuner but if you find that you need it, an early Power Commander piggy backs very easily.
My previous bike was a '98 Ultra, Flowed heads EV 3030 cam, hi flow and a 2 into 1 ProPipe and all it needed was the Power Commander too. (Rode that one 65,000 miles.)
Don't worry about it....
My previous bike was a '98 Ultra, Flowed heads EV 3030 cam, hi flow and a 2 into 1 ProPipe and all it needed was the Power Commander too. (Rode that one 65,000 miles.)
Don't worry about it....
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,077
Likes: 2,137
From: Ohio
Harley's answer to this question was a package that included a SE3 cam - same numbers as a EV27, upgraded air filter, red injectors and a reflash cartrage. It's my understanding that the flash only raised the rev limiter and the red injectors covered the fuel addition with the same map in the ECM. Breaking it down the MM isn't smart enough to know how much fuel it is injecting, if you have a injector with more fuel delivery, it will take the same pulse width from the ECM and add more fuel, stock injectors need a device to keep the injector open longer by altering the pulse width such as a PC3.
Red injectors are easy to come up with, they run into 2001 in the Twinkies and many take off systems around cheap
Red injectors are easy to come up with, they run into 2001 in the Twinkies and many take off systems around cheap
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Cruiser
Joined: Nov 2006
Posts: 206
Likes: 5
I have NOT read about the red injectors. I just got done reading a couple of hours on the EFI system, and was wondering how I could "trick" the system into increased fuel delivery. The "red" injector is a solution similar to how I increased fuel flow into one of Chevy's first EFI platforms, the 87 Camaro. Thanks for a great tip.
Tourer
Joined: Jun 2011
Posts: 283
Likes: 44
From: WV
1997 Ultra with Stage 1 AC, true duels and EV 13 Cam...Just added the ev 13 with top end rebuild this past winter....DFO installed to add fuel was on bike when I purchased it with 64K. I did the rebuild with 90k on spedo and put 5k on since with no problems. I am thinking real hard about going with a power comander from fuelmoto though as it will adjust timing as well as fuel (if I am reading all the info right?). Very happy with the Cam change but fuel mileage is down just a little and I am just not sure I am getting it dialed in JUST RIGHT with the DFO.
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