F10X engine dies after blipping the throttle

[arush71]

I have one problem. When under no load and I blip the throttle to around 3500 rpm. When it returns to an idle The engine begins to idle then slowly dies out. I can restart it right away with no problem and it idle’s fine. The motor is a 351 Cleveland with IR intake. Big cam so I’m using TPS , and zero throttle map for idle. I’ve played around with the throttle pump adjustment, not sure what I’m doing there.
What could be the problem?