[cors187]

ive always thought these things are vacuum signal and fuel
the reason is the extremely hard start after a stall.
what does a stall do that a normal shut off doesnt?

does the stall bounce a lean type wave back into the intake, the map sensor received some abnormal data, then you try start it and the intake is dry, the map sensor doesnt sense the vacuum immediately.... hmmm

the best thing is to dump fuel, dont go back to the same pump, add all new fuel.

most guys would run a sensor mod, either o2 or air temp.

but seriously it could be 2 or 3 things that limit the fuel injection quantity to fark all during idle....

 

[cors187]

The other thing you could try is the 15 minute idle reset. Anyone have any experience with this or is it as straight forward as turning the bike on and letting it idle for 15 minutes NOT TOUCHING ANYTHING?

yeah , with a bike thats idling for a certain amount of time , some say 15min , some say until the fan comes on, some say 10 min.
But in anycase , given no throttle input for that amount of time, it resets the o2 closed loop which handles idle and part opening of throttle , part throttle cruise. It takes away the trim values that have been added to the ecu by the 02 sensor. with a reset the closed loop is running starign from a base type setting. Almost always a but richer than trimmed idle..

 

[cors187]

the dongle is good for o2 tune diagnostic,cheap solution , easy to remove
if it didnt immediately fix the problem then its not the o2 system thats causing your drama

 

[cors187]

Yep, the dongle is only a bandaid even in the best circumstances....

Also fitting a dongle only means your driving on the ecu closed loop capability, older ecu have less processing, less useful range. They have been changing ecu often. Mostly the flagship duke 690 gets new ecu and it filters out to other model's....... Its hard to say when the bike is new. If you have a good ktm place then they have swappable parts. If they are jap bikes, you might find that you start directing them to a cure after they checked, found nothing and charged you....... It happens in the USA more than any other place.