all the ones that dont hold water and oil lol....... just kidding bud

i had one doing the same as you and it was the fueling causing it to cut out, and could be a weak earth too....

clean out the idle control valve, check all breathers, and check none of the boost pipes of intercooler/ vac pipes have a leak, this would cause it to hunt or cut out when stopping

adjust the idle screw to tighten up the throttle bracket/cable slightly

sounds to me like its got a vac leak somewhere