[safetyfish]

Bike is a 999R - 2005 model
ECU is a Corse racing ECU / Racing Air filters
Rest of bike is standard
TPS was reset
Cylinders balanced / CO set at 4.2% / Idle rpm at 1300

Problem: Bike will stall on idle at high temp, or whenever the mood takes it.
Coming into a roundabout this AM the thing died as I changed down in the gears, clutch was pulled in, the rpm dropped to around idle speed, just as I was going into second gear. This is getting annoying apart from dangerous. It feels almost like a sledgehammer is hitting the piston as it dies. It is not the running out of speed kind of dying. It is a violent stop.

Apparently, one thing to check is that butterfly valves opens equally. So I opened the airbox and had a look to see if this has any bearing on the problem. (I can already see trouble with getting that middle throttle cable back in position.)

here is the problem, it would appear that the front cylinder throttle body has seen flame at some point internally.
Am I paranoid or is this normal?
Why would this happen?
How do you fix it if it is a problem?