Ignition upgrade 1983 FXR
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
Likes: 5,449
From: la la land jerzey
in my shop over the past 25 years its been around my guess we installed a couple 1000 at least
as a dealer they will take any one of them we sold and replace it for free only had one that the led light burned out and they gave us a new one
i static set them all and use them in all the bikes from 1970 to 1999 - we do not work on anything after 1999 and i dont care what they are doing about anything
as a dealer they will take any one of them we sold and replace it for free only had one that the led light burned out and they gave us a new one
i static set them all and use them in all the bikes from 1970 to 1999 - we do not work on anything after 1999 and i dont care what they are doing about anything
Road Master
Joined: Jun 2013
Posts: 1,239
Likes: 1,171
From: St. Catharines, Ontario
I currently have 3 machines with the Ultima, had a coil fail on one of them. I static timed them then checked with a timing gun , all were close and not worth tweaking. Bought the cable to program 0 revs.
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Stellar HDF Member
Joined: Mar 2016
Posts: 2,285
Likes: 965
From: Eastern NC
Also on a " light bike" like the FXR would I benefit from adding a VOES?
Club Member
Joined: Mar 2009
Posts: 66,126
Likes: 51,455
From: Niles Canyon Ca.
Bone stock there's no disadvantage to running a VOES. VOES is just a vacuum actuated way of replacing the mechanical advance, uses intake vacuum to change the timing curve instead of RPM's. Some cam's and carb choices can play hell with that and most shops can't tune a VOES.
HDF Community Team
Joined: Dec 2005
Posts: 5,422
Likes: 2,621
From: NC USA
Bone stock there's no disadvantage to running a VOES. VOES is just a vacuum actuated way of replacing the mechanical advance, uses intake vacuum to change the timing curve instead of RPM's. Some cam's and carb choices can play hell with that and most shops can't tune a VOES.
They are over $50 so I would try it without and ground the wire that feeds the module. That makes it run in full advance (depending on rpms) look at this chart. It will show you the different timing curves. This is the Ultima chrt, the Dyna 2ki curves are different.
If you ground the module lead for the voes, it will use the dotted line advance curve. Leave it un-hooked it will follow the solid lines.There are switches on the module to easily change from 1 thru 4 lines of advance.
Last edited by t150vej; Jan 7, 2021 at 12:36 PM.
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Stellar HDF Member
Joined: Mar 2016
Posts: 2,285
Likes: 965
From: Eastern NC
Bone stock there's no disadvantage to running a VOES. VOES is just a vacuum actuated way of replacing the mechanical advance, uses intake vacuum to change the timing curve instead of RPM's. Some cam's and carb choices can play hell with that and most shops can't tune a VOES.
Club Member
Joined: Mar 2009
Posts: 66,126
Likes: 51,455
From: Niles Canyon Ca.
I wouldn't bother with that combo, J's close to the stock H grind, tends to be a bit flatter off the line and likes midrange more. No gain putting one in if it isn't there already.
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Stellar HDF Member
Joined: Mar 2016
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From: Eastern NC
I have seen some installs with a 2 pole single throw toggle switch, one pole for the Purple wire and other to ground . Keep the purple wire grounded for normal riding, steep curve. Open the switch when going up a hill riding 2 up with gear, gradual curve. Any thoughts?
Club Member
Joined: Mar 2009
Posts: 66,126
Likes: 51,455
From: Niles Canyon Ca.
I have seen some installs with a 2 pole single throw toggle switch, one pole for the Purple wire and other to ground . Keep the purple wire grounded for normal riding, steep curve. Open the switch when going up a hill riding 2 up with gear, gradual curve. Any thoughts?