EFI to Carb conversion?
Elite HDF Member
Joined: Aug 2006
Posts: 3,863
Likes: 21
From: Kennewick, WA
He may have the Magneti Marreli injection on it. The baggers had the option of FI on the Evos.
Novice
Joined: May 2009
Posts: 18
Likes: 0
From: RAF Lakenheath, England
Wow, amazing but pricey compared to just doing the F.I. thing. Granted it took me years to move over to the F.I. side of the fence since i started in the mids 80's with my 71 chevelle el-camino. Sure carbs are easy but a lost art to adjust. If you still remeber the basic requirements to make an engine run anyone can still play with tuning via computer with a quality module. Just go with your nose, ears and old reliable vacume gauge when tuning anything. I'll stick with my old shovel for carbs and my 08 for reliability.
Outstanding HDF Member
Joined: Apr 2006
Posts: 2,555
Likes: 3
From: Clarksburg, PA
When I changed the intake gaskets, they looked clean, plus have put FI cleaner through it.
The bike will start popping and coughing after about 1 minute into heating up, then usually goes away and runs like a raped ape.
The plugs are tan...before changing the intake gaskets, they were a little white, but may have been from the TB cleaner.
If I let it sit and start up again after it cools off, I'm getting the coughing again.
Seems to me to be a specific heat range that it happens at. So if the FI gurus would just tell me which electrical part controls that, I'll replace it.
So what is it?
The bike will start popping and coughing after about 1 minute into heating up, then usually goes away and runs like a raped ape.
The plugs are tan...before changing the intake gaskets, they were a little white, but may have been from the TB cleaner.
If I let it sit and start up again after it cools off, I'm getting the coughing again.
Seems to me to be a specific heat range that it happens at. So if the FI gurus would just tell me which electrical part controls that, I'll replace it.
So what is it?
Outstanding HDF Member
Joined: Apr 2006
Posts: 2,555
Likes: 3
From: Clarksburg, PA
Didn't I see on another forum that you have already done the swap?
Club Member
Joined: May 2006
Posts: 14,564
Likes: 9,223
From: the 50s & the 60s
When I changed the intake gaskets, they looked clean, plus have put FI cleaner through it.
The bike will start popping and coughing after about 1 minute into heating up, then usually goes away and runs like a raped ape.
The plugs are tan...before changing the intake gaskets, they were a little white, but may have been from the TB cleaner.
If I let it sit and start up again after it cools off, I'm getting the coughing again.
Seems to me to be a specific heat range that it happens at.
So if the FI gurus would just tell me which electrical part controls that,
I'll replace it.
So what is it?
The bike will start popping and coughing after about 1 minute into heating up, then usually goes away and runs like a raped ape.
The plugs are tan...before changing the intake gaskets, they were a little white, but may have been from the TB cleaner.
If I let it sit and start up again after it cools off, I'm getting the coughing again.
Seems to me to be a specific heat range that it happens at.
So if the FI gurus would just tell me which electrical part controls that,
I'll replace it.
So what is it?
.
I'm no guru..... a wild guess....................... PCIII???
mud
.
Outstanding HDF Member
Joined: Apr 2006
Posts: 2,555
Likes: 3
From: Clarksburg, PA
In my list of things I posted earlier, it was the first thing I did.
Disconnected and it still coughed. Even loaded a more conservative map and reset throttle position to 0%.
Disconnected and it still coughed. Even loaded a more conservative map and reset throttle position to 0%.
Club Member
Joined: May 2006
Posts: 14,564
Likes: 9,223
From: the 50s & the 60s
I missed the list before.
so, when you remove the PCIII, the O2s are back in the mix??
when the PC is off, it reverts to stock map, or some other??
mud
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Elite HDF Member
Joined: Sep 2007
Posts: 4,541
Likes: 1
From: Nuevo México, Los Estados Unidos de América
Yes. Remove PCIII, you go back to whatever map is flashed into the ECM, prob a stock map.
Outstanding HDF Member
Joined: Apr 2006
Posts: 2,555
Likes: 3
From: Clarksburg, PA
I could borrow my brother's and load my custom map, but hate to tear into his bike.
I didn't hook up the O2 sensors when I removed the PCIII but the eliminators where still hooked up.
I think that I will return it to stock and see how it plays out. If it still has the problem, I'm going to hit up the stealer and see if I can get the injectors changed...still have the 8°s.
Funny thing is, this just happened when I was leaving Johnstown from Thunder in the Valley recently...untill then all was good!
Getting carpal tunnel surgery Friday so was just busting my butt to see if I could get it cleared up before then...left was done 3 weeks ago and now my right is getting done.
Thanks for the suggestions.
I didn't hook up the O2 sensors when I removed the PCIII but the eliminators where still hooked up.
I think that I will return it to stock and see how it plays out. If it still has the problem, I'm going to hit up the stealer and see if I can get the injectors changed...still have the 8°s.
Funny thing is, this just happened when I was leaving Johnstown from Thunder in the Valley recently...untill then all was good!
Getting carpal tunnel surgery Friday so was just busting my butt to see if I could get it cleared up before then...left was done 3 weeks ago and now my right is getting done.
Thanks for the suggestions.