Injection to carb conversion
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6th Gear
Joined: Apr 2007
Posts: 14
Likes: 4
From: North Haven CT
Injection to carb conversion
I have to say after about 2 years debate I got rid of the MM injection on my 97 Ultra and went with a Mikuni hsr 42 using a Slayer harness that uses a 02-08 twin cam harness and used a Daytona Twin Tec and can't be happier. Went from 38-40 mpg to 48-50. The engine itself has 150K, running a andrews EV27 cam, compression at about 10-1, really woke it up. I just have to lick my wounds for a week or so, got into an accident when somebody turned in from of me at about 30mph and waiting for the road rash and soreness to go away. New engine guard and I will be back in business, no additional damage thank god
Seasoned HDF Member
Joined: Feb 2007
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From:
Hope you heal soon.
Looks like you have a former M & M fuel injected bike with an Evo motor that was converted to carb.
What is a slayer harness?
Why did you need that harness?
Guessing that a Daytona Twin Tec might be an ignition module. Which one?
It takes more than change 2 or 3 parts to convert from fuel injection to Evo.
Guessing that maybe you used the pingel conversion kit for fuel tank?
It might help others if you detail the parts and process you used.
Looks like you have a former M & M fuel injected bike with an Evo motor that was converted to carb.
What is a slayer harness?
Why did you need that harness?
Guessing that a Daytona Twin Tec might be an ignition module. Which one?
It takes more than change 2 or 3 parts to convert from fuel injection to Evo.
Guessing that maybe you used the pingel conversion kit for fuel tank?
It might help others if you detail the parts and process you used.
Novice
Joined: Sep 2008
Posts: 19
Likes: 16
I have to say after about 2 years debate I got rid of the MM injection on my 97 Ultra and went with a Mikuni hsr 42 using a Slayer harness that uses a 02-08 twin cam harness and used a Daytona Twin Tec and can't be happier. Went from 38-40 mpg to 48-50. The engine itself has 150K, running a andrews EV27 cam, compression at about 10-1, really woke it up. I just have to lick my wounds for a week or so, got into an accident when somebody turned in from of me at about 30mph and waiting for the road rash and soreness to go away. New engine guard and I will be back in business, no additional damage thank god
A clogged gas cap vent will screw with your head for sure...
Thread Starter
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6th Gear
Joined: Apr 2007
Posts: 14
Likes: 4
From: North Haven CT
https://www.vtwinfuelinjection.com/ This is the harness I used, I used a daytona twin tek TC88 module, Pingel conversion. I had to run the MM system kinda on the rich side due to using an older tuner and not being able to adjust timing for my added compression etc.
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6th Gear
Joined: Apr 2007
Posts: 14
Likes: 4
From: North Haven CT
I have all the parts I pulled off which include the factory module that has a stage 2 tune if I recall, red top injectors, I also have the original injectors if there's any interest. It would be nice to keep someone on the road with the MM system, just don't want to give it away to have somebody just re-sell if for crazy money since most is N/A. Also have the pump and filter mount as well
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,081
Likes: 2,159
From: Ohio
Agree with you on the carb is night and day difference on performance and the wire harness you mention seems easy, for $249 a programable ignition module comes with a wire harness gets rid of the remaining MM harness and controls giving more options on timing, curves and programmable features.
Since the Harley Evo carb harness is obsolete and a TC harness needs spliced, the Thayer mentioned would be appealing for a conversion when marketed as plug and play. I'm aware of what tuners can do with MM timing and ease of changing timing area's when you have software but still not programmable as a Dyna of Ultima 2000I
Since the Harley Evo carb harness is obsolete and a TC harness needs spliced, the Thayer mentioned would be appealing for a conversion when marketed as plug and play. I'm aware of what tuners can do with MM timing and ease of changing timing area's when you have software but still not programmable as a Dyna of Ultima 2000I
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Road Master
Joined: Sep 2013
Posts: 1,054
Likes: 441
From: Tejas
I have all the parts I pulled off which include the factory module that has a stage 2 tune if I recall, red top injectors, I also have the original injectors if there's any interest. It would be nice to keep someone on the road with the MM system, just don't want to give it away to have somebody just re-sell if for crazy money since most is N/A. Also have the pump and filter mount as well
Griz
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