Another MM EFI vs Carb thread
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Road Warrior
Joined: Apr 2007
Posts: 1,952
Likes: 15
From: Senoia, Ga., by way of Miami, Fl..
Another MM EFI vs Carb thread
So, I thought I was decided on keeping the EFI on my '95 Ultra Classic('98 RK engine & module)... However, with my decision to add a mild cam this winter, I'm now doing the cost comparison to convert.. As I understand it, the MM should do fine with a EVL-3010, slip on's and air cleaner as long as I add a PCIII or DFO. Those options are in the $200-250 range. The S&S control module sounds like a "better" option, though more pricy at $650, but I cant seem to find anyone that has used it..
As for the conversion, the stuff I've read and researched, makes me believe I can pick up a used CV and manifold for about $150 and use Pingel's tank adapters with valve for $150 with a new ignition module for another $250 and be good to go.. for less than the price of the S&S module.. Does that sound right?? Will the factory cruise control work?? Any other cost I may be missing??
Anyhow, thanks for any input guys, trying to get my shopping list together..
**This is turning into a build thread, bear with me as I add other projects to the EFI conversion, hope it helps someone..**
As for the conversion, the stuff I've read and researched, makes me believe I can pick up a used CV and manifold for about $150 and use Pingel's tank adapters with valve for $150 with a new ignition module for another $250 and be good to go.. for less than the price of the S&S module.. Does that sound right?? Will the factory cruise control work?? Any other cost I may be missing??
Anyhow, thanks for any input guys, trying to get my shopping list together..
**This is turning into a build thread, bear with me as I add other projects to the EFI conversion, hope it helps someone..**
Last edited by HGM; Mar 9, 2014 at 08:31 PM. Reason: direction
Seasoned HDF Member
Joined: Aug 2008
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From: Ohio
Nice info in this thread, PM him and see if he is still active rickss69
https://www.hdforums.com/forum/evo-c...i-marelli.html
https://www.hdforums.com/forum/evo-c...i-marelli.html
Last edited by 1997bagger; Nov 3, 2013 at 02:45 PM.
Cruiser
Joined: Mar 2013
Posts: 178
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From: Ohio
Bagger is being a bit modest. While that thread will be of use to you in making a decision, he is quite knowlegable when it comes to converting from M&M to carb. Search previous threads for the conversion and you will find a good list he made. These guys on here were very helpful while I was doing my conversion. I spent alot more than $600 though but bought all new off ebay. Just a few things that come to mind that your going to need to add to list are VOES, new wiring harness or rewiring your old harness, choke bracket, cable, some new gaskets just to name a few. I was very pleased with how the bike ran after the conversion.
Seasoned HDF Member
Joined: Nov 2010
Posts: 17,548
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From: Oxford, Nc
Back when I had my '98 Ultra we built her into a good running 10:1, flowed heads, EV 30-30 runner, and all that we added to the mix was the Hi Flow A/C and a Power Commander.
But if my current MM injection ever does go south, I'll look at the S&S module before I'll convert to carb.
(And as to cruise control, I can't answer as to whether you get to keep it if you do the conversion.)
But if my current MM injection ever does go south, I'll look at the S&S module before I'll convert to carb.
(And as to cruise control, I can't answer as to whether you get to keep it if you do the conversion.)
Club Member
Joined: Jun 2007
Posts: 45,429
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From: Bedford UK
I believe that HD sells the S&S VFI module under their own branding for less than S&S, which might be worth looking into. Involves much less changes than fitting a carb, is tunable at home and we need a volunteer to write up what is involved, for future reference! 
There are also kits to replace MMI available from Zippers possibly others.
There are also kits to replace MMI available from Zippers possibly others.
Banned
Joined: Oct 2013
Posts: 300
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From: Shelby twp Michigan
Been there done that with just trying to replace the module only.."the MM throttle body tends to wear the throttle blade shaft and bore out causing unstable TPS readings and it is un serviceable" Unless you are going to do the entire S&S conversion with the single bore throttle body and closed loop kit you will just be beating your brains in.. I did 2 total S&S vfi upgrades and the results were incredible.
Seasoned HDF Member
Joined: Nov 2010
Posts: 17,548
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From: Oxford, Nc
Been there done that with just trying to replace the module only.."the MM throttle body tends to wear the throttle blade shaft and bore out causing unstable TPS readings and it is un serviceable" Unless you are going to do the entire S&S conversion with the single bore throttle body and closed loop kit you will just be beating your brains in.. I did 2 total S&S vfi upgrades and the results were incredible.
And do you recall about how much you had into the "total" upgrade kit?
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Banned
Joined: Oct 2013
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From: Shelby twp Michigan
I have found that anything over a mild cam on a MM system seems to start causing tuneability issues. The kits are by no means cheap close to $2000 in parts alone.However you are essentially making it in to a new delphi style system.
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Seasoned HDF Member
Joined: Dec 2012
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From: Orange County
I have the MM EFI, and, even though I got my bike to run better with a Power Commander and a modified map, I'm still gathering the parts for the carb conversion.
Maybe I'll do it this winter... if I can get a schematic of a carbed bike!
Maybe I'll do it this winter... if I can get a schematic of a carbed bike!
Last edited by Road Star; Nov 3, 2013 at 05:18 PM.
Thread Starter
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Road Warrior
Joined: Apr 2007
Posts: 1,952
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From: Senoia, Ga., by way of Miami, Fl..
Thanks for the input guys... So, has anyone got or used an SE Race tuner?? Thoughts?? I'm a car tech by trade, so EFI does not scare me in the least and I've been fairly committed to keeping the EFI till this afternoon for various reasons.. On my bikes, I really do like the sound and simplicity of a carb, but I'm fine with the EFI.. This is my DD for work and back, so I need a good reliable platform which the MM has been so far.. Being a car guy, I tend to shy away from piggy back stuff and prefer a replacement module and or program rather than a trick.. One reason I went with the '98 module was for supposed tunability. Is that right?? Do I even need to get different parts or will a simple "map" in my current module do the trick?? I don't even know where to get this thing flashed if that's the case, was it a dealer only thing??