EFI to Carb conversion?
Road Master
Joined: May 2006
Posts: 941
Likes: 27
From:
I've rejeted exactly one carb in my life and it was the easiest thing I've ever done. Just a little time consuming in running the bike, check plugs, change jet if necessary. Granted with FI we download a map and for the most part we're good to go. Although changing pipes would get cheaper because you wouldn't need to worry about the FI / backpressure / EPA thing. You could theoretically just add a set of drag pipes and be fine, right?
But to each there own.
Novice
Joined: Aug 2008
Posts: 19
Likes: 0
From: Las Vegas, NV
Isn't the advantage of EFI is that it dynamically changes the tune all the time? For example, if you live at sea level and take a ride up to the mountains, it will adjust for the difference in air density on its own. I had a carbed yamaha (I know, shame on me), and when I rode to high altitudes, it would run really rich and be a bit of a dog.
I think EFI is the future, however, I suppose it does handicap the home mechanic a little bit if you are not used to working on them. Everything has its pluses and minuses I guess. Do what you prefer
I think EFI is the future, however, I suppose it does handicap the home mechanic a little bit if you are not used to working on them. Everything has its pluses and minuses I guess. Do what you prefer
Last edited by ctren; Sep 12, 2008 at 02:29 AM.
Stellar HDF Member
Joined: Sep 2006
Posts: 2,777
Likes: 9,041
From: Monroe, NC
Sometimes I miss my carbed 1200 Roadster, it just seemed to have more personality....
The way it needed to cough, sputter, clear it's throat and then settled into a nice loping idle was part of the routine that I miss.
Yeah, it's nice to just fire up and go with the Fat Bob but something just ain't the same.
The EPA and Mo Co ain't stupid....
They know that if they make it more complicated and expensive to modify your bike, less people will do it.
The way it needed to cough, sputter, clear it's throat and then settled into a nice loping idle was part of the routine that I miss.
Yeah, it's nice to just fire up and go with the Fat Bob but something just ain't the same.
The EPA and Mo Co ain't stupid....
They know that if they make it more complicated and expensive to modify your bike, less people will do it.
Outstanding HDF Member
Joined: Apr 2006
Posts: 2,555
Likes: 3
From: Clarksburg, PA
Isn't the advantage of EFI is that it dynamically changes the tune all the time? For example, if you live at sea level and take a ride up to the mountains, it will adjust for the difference in air density on its own. I had a carbed yamaha (I know, shame on me), and when I rode to high altitudes, it would run really rich and be a bit of a dog.
I think EFI is the future, however, I suppose it does handicap the home mechanic a little bit if you are not used to working on them. Everything has its pluses and minuses I guess. Do what you prefer
I think EFI is the future, however, I suppose it does handicap the home mechanic a little bit if you are not used to working on them. Everything has its pluses and minuses I guess. Do what you prefer
Our system isn't that sophisticated.
It's a closed loop system, meaning that it doesn't make the adjustments like your car will.
Would be awesome if it was though.
Tourer
Joined: Jan 2008
Posts: 417
Likes: 0
From: cambridge ohio
that is awesome,great find,long hair,I agree with ya,i am an ase master cert. auto tech and understand about every type of injection system out there,and it is a pain in the *** on a harley,in my opinion, too much technology on an air cooled v-twin.
i like how i can adjust my tables, to allow for more and less thoughout certain areas of my RPM ranges... that is my fav part about EFI... i just like it in all honesty, i like to plug in the bike and see what it is actually doing... i have gone though the article and do not really see why it would not work... it should... if you do do this toss a big mikuni carb on there... def one of my favs!
Tourer
Joined: Jan 2008
Posts: 417
Likes: 0
From: cambridge ohio
it isn't because our systems are closed looped that does'nt allow them to adjust dramatically,it that they use narrow band o2 sensors,anytime a system is reading info from o2 sensors then adjusting pulse width,you are in closed loop.when you are running on predetermined values flashed into the ecm's prom,then you are in open loop.
Tourer
Joined: Dec 2005
Posts: 426
Likes: 0
From:
If you have a 2006 or newer Dyna, you may not be able to meet the EPA pollution spec. That is why Harley went to EFI.
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Club Member
Joined: Feb 2008
Posts: 11,483
Likes: 39
From: Passaic County, NJ
and just by altering the stock fi system with pcIII, fuelpak, etc. we have made our vehicles illegal by your thinking because I bet they wouldn't meet the stringent EPA requirements that require HD to deliver bikes to the dealers running so lean.
Last edited by SC-Longhair; Sep 12, 2008 at 12:44 PM.