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I have a long post about this in the Hypermotard section, but I wanted to get a post going in the Tech section that is updated.

Here is how to replicate the problem (with back story and plans below):
Here is how to repeat the problem. Idling it seems fine. WOT it feels fine. Even mild acceleration seems fine. Acceleration could be masking the problem, but it honestly feels like I would imagine it should. The problem starts when I am simply maintaining speed. It feels like the fuel is cutting off or a cylinder is misfiring randomly. A smooth road feels bumpy. If I pull the clutch and coast, it feels and sounds fine.

Do you think a dyno ECU tune would fix this? What other things could I try that I haven't already done? If the ECU tuning doesn't work, I'm going to be very sad. My mechanic being stumped is pretty disheartening.

Back story and current status: My 2012 1100 EVO SP has had some issues. When I first bought it it was having some minor surging. That evolved into bad surging, a cylinder missfire, and stalling issues. It has a bit over 9000 miles on it and I put about 600 of those on myself. I had a local Ducati specialist adjust the valves which were pretty tight and that with some new plugs fixed the idling problems and seemed to smooth out the surging for awhile. He also looked over other things like timing, throttle synch, etc.

I took my wife on about a 2 hour ride on Saturday and the surging was annoying, but not terrible. Today I fire it up to ride to work and it seems like the surging is getting worse, but the idling seems fine. I am scheduled to have the bike dyno tuned at the ECU at a fairly local expert (Rob's Dyno Service) in early September, but wondered i there is anything else I should try in the mean time. I also intend to play with the air bleed screws after it was suggested by a forum member.

Thanks for taking the time to read and reply!
 

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I have a long post about this in the Hypermotard section, but I wanted to get a post going in the Tech section that is updated.

Here is how to replicate the problem (with back story and plans below):
Here is how to repeat the problem. Idling it seems fine. WOT it feels fine. Even mild acceleration seems fine. Acceleration could be masking the problem, but it honestly feels like I would imagine it should. The problem starts when I am simply maintaining speed. It feels like the fuel is cutting off or a cylinder is misfiring randomly. A smooth road feels bumpy. If I pull the clutch and coast, it feels and sounds fine.

Do you think a dyno ECU tune would fix this? What other things could I try that I haven't already done? If the ECU tuning doesn't work, I'm going to be very sad. My mechanic being stumped is pretty disheartening.

Back story and current status: My 2012 1100 EVO SP has had some issues. When I first bought it it was having some minor surging. That evolved into bad surging, a cylinder missfire, and stalling issues. It has a bit over 9000 miles on it and I put about 600 of those on myself. I had a local Ducati specialist adjust the valves which were pretty tight and that with some new plugs fixed the idling problems and seemed to smooth out the surging for awhile. He also looked over other things like timing, throttle synch, etc.

I took my wife on about a 2 hour ride on Saturday and the surging was annoying, but not terrible. Today I fire it up to ride to work and it seems like the surging is getting worse, but the idling seems fine. I am scheduled to have the bike dyno tuned at the ECU at a fairly local expert (Rob's Dyno Service) in early September, but wondered i there is anything else I should try in the mean time. I also intend to play with the air bleed screws after it was suggested by a forum member.

Thanks for taking the time to read and reply!
Did you get this issue solved? I just did some mod's / repair to my hyper and the surging is worse than ever. Put on the RSR airbox with UPmap. It's so bad I'm going to have to go back to the stock box, stock map if I can't figure this out. It's horrible. That being said, WOT the performance is a big increase. However, destroying the rideability just cruising at 50 to 70 in almost any gear the bike is not running well at all. I put the OEM map back in but still no difference.
 

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Might be running lean which could lead to misfires and surging. In that case a dyno tune can fix the problems. Be aware that you need a dynomometer that is able to maintain the speed at all loads, an acceleration dynomometer is not the tool for smoothing out your problems when cruising.
 

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Might be running lean which could lead to misfires and surging. In that case a dyno tune can fix the problems. Be aware that you need a dynomometer that is able to maintain the speed at all loads, an acceleration dynomometer is not the tool for smoothing out your problems when cruising.
Nah it was much simpler than this. I had my horizontal and vertical fuel injection plugs mixed up / plugged in the wrong cylinder.
 
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