Thanks Docc, you might have given me a partial solution to my V11's "cough" at low revs. My previous fix didn't work. I've done the basic tune. My latest theory is vapor-lock in the lines at low flow. I purchased some DEI Fire Wrap for the fuel line from Summit racing to add another layer of insulation - just in case. https://www.summitracing.com/parts/DEI-010477/
I couldn't figure out which line was the supply and which was the return so I wrapped both. One thing I noticed was the crossover was very tight underneath the airbox. I wonder if the line became pinched there after I removed & cleaned the 1/2 cup of oil out of the airbox.
So this weekend I've got new chores for the V11. Pull the tank and airbox check & reroute the fuel line, if there's room put some fire wrap between tranny and fuel line at the crossover.
I know other's don't have this "cough" because the bike is actually unrideable when hot and 100+ temps with nasty traffic is common in California.
I apologize to all for thread-jacking.
Mark
Mark, if it is your in tank lines vapor locking, that's the first time I've heard of that one. Vapor lock of the exposed line from the fuel shut off to the pump on the earlier sports is why they went to the in tank pump, etc.
I have a hard time imagining a high pressure line vapor locking..