Stumble and/or Dies with QUICK Trhottole open/close?

My bke runs great. I have PCV and Autotune.

The only small issue is that if I VERY Quickly open and shut the throttle when at idle it will sometimes die.

I've messed with the settings just above idle, disabled the autotune and installed richer low throttle setting, played with the "accellerator pump" feature, etc. and it still does it. It did have a lean condition at 2% throttle (which seemed to come from some anomolie in the autotune?) that would cause it to miss or die at that opening but I fixed it by disabling the autotune at that %.

However the bike will still sometimes die if I Quickly blip the throttle.

Any ideas appreciated

I have the same issue on my wr250x; it only happens when 1) I ride the bike for awhile, 2)its a really hot day, 3) and I'm at dead stop on idle. My bike is all stock except for the flapper being removed and I think the baffle on the stock exhaust has been removed.

I think there was a discussion about this on another thread just can't find it right now. I think I read from somebody here that it was a possibility that when you blip the throttle when the piston is at a certain location, it will stall. I don't know if this is true since I didn't remember much from that thread.

I just learn to live with it and made sure I rev slightly at a light so it doesn't stall when the light turns green to take off.

Sorry I couldn't help much.

I'll keep looking for that thread. If you end up finding it let me know.