[ZDM]

Thanks for inviting us to MotoGP Mugello Mr. One Way...
It just sounds like bad gas, bad combustion....I would siphon out ALL the gas, put some good stuff in it. Then change the plugs.....plugs are optional. But with all the additives in today's gas I understand that it far more common for gas to get stale faster, injectors to get gummy....I'm sure your injectors are fine. Other than that I would check my battery, make sure it's fully charged
...but that's my opine right off....

 

[ZDM]

The battery should have nothing to do with the bike running bad or stalling.

It's imperative that the battery be fully charged in the 999..in any Ducati really. It's a good place to start, especially if his 999 has stalling fits and needs to be restarted. A poorly charged battery will quickly give up and can affect ECU signals.
....Fuel-Air-Spark. Unless a mouse took up residence in your air duct..??? You probably just has some condensation in the gas, along with it being a bit stale. Not sure what Canada allows in their fuel.
Just needs new fuel and to be ridden.
I'm not sure why a 41T would cause stalling. I went from a 36T to 38T to 41 then 42T rear and found the 15/42 was the best combination. My chain was barely long enough for the 42T so I had to go back to the 41T. But it definitely removed the jerkiness and made clutching off the start loads easier. Plus the 42T showed a marked improvement in acceleration.

 

[ZDM]

Disagree... But opinions are like a$$holes, everybody's got one.

I always take issue with someone who slams another member who is offering an opinion in good faith.
Disagree fine, but then offer a reply as to why instead of the above....

 

[ZDM]

The pc111 usb starts a lot earlier than 3 to 4k. It modify's the fueling curves which start at 1500 rpm . I have in an earlier thread showed that they change the fueling from tick over. As the map chart that you get from your power commander shows the changes in numbers from 1500 rpm. Ill see if I can find it to post here.

Here it is.

my own commander maps start at 1500 rpm an go on to 11000 rpm. I was led to believe that the pc111 usb worked from idle and my own maps certainly start there. I cant upload my maps but they start like this. and go on to about 1100.

500 0 0 0 0 0 0 0 0 0
750 0 0 0 0 0 0 0 0 0
1000 0 0 0 0 0 0 0 0 0
1250 0 0 0 0 0 0 0 0 0
1500 0 13 3 0 0 0 0 0 0
1750 0 9 4 -7 0 0 0 0 0
2000 0 8 4 -13 -6 -14 -6 -1 0
2250 0 0 0 -21 -16 -23 -22 -14 4
2500 0 0 -1 -12 -18 -14 -14 -19 -18
2750 0 0 -25 -15 -9 -8 -10 -7 -6
3000 0 0 -23 1 -13 -2 4 9 12
__________________

This is interesting.....I had FBF install a PCIII on my 999, custom map and all that other BS in hopes it would stop the stalling. Well it improved the throttle response, picked up 5HP says FBF's dyno sheet, but still stalled. I found later after speaking to a DynoJet tech via land line that the PCIII will not have any affect from idle to 4000 rpm. It really was never completely resolved until I installed the new ECU that came with my Termignoni 54mm exhaust kit. I installed it myself and had FBF zero out the TPS. No more stalling! The only time I had an issue again was fixed by new plugs.
The clutch burp is interesting....if your running a small rear sprocket and the clutch isn't releasing properly it can feel just like a stall. Smart thinking.....

 

[ZDM]

Its very easy to look at or download your own maps . Look at your own and see where the fueling starts . If the numbers start at 1500 , as mine do , then thats where the fueling from the pc111 starts . The earlier none usb pc111 started at 4000 rpm . Now that could be true but the later usb pc111 starts at 1500 rpm.

Plug it into a windows lap top with the pc111 free down loaded software and have a look for your self . Its good to know how to set your own tps anyway which can also be reset . High and low throttle if you want. Theres even a tutorial on the pc web site.

I'm not saying your wrong, I just found your post and graph interesting as it contradicts what the DJ tech stated.
My 999 has always run very well on PCIII mapping. When I had the bore kit installed I discussed going to a Nemesis ECU with FBF. They said the Nem was a waste of $$$ for street riding. Although a much better product. They did a nice job mapping out my 1038cc kit...pulls hard from idle to rev limiter.
However IMO the DP/Termignoni ECU that came with my 54mm exhaust kit did a better job than the PCIII, fixed the stalling, better throttle response, etc.

 

[ZDM]

Nothing beat a fine running Ducati, interesting problem w/ an interesting solution...glad you solved it on your own.
Great Job!