that blip or quick rev rev deal at a stop and a stutter instead of a rev at wrist twist is a ecu flash issue, the map was setup wrong, period. Mine does it, while i set my shit up to pull hard there is a slight overlap where if i do a quick double rev at a light or stop from idle it will sometimes bog or stutter, never figured out what part of the tune caused it but when ii flashed it to stock it went away put the tune back on got the stupid stutter but only at partial throttle and only from idle and only sometimes, dont trip unless it does it when you are already going, then its an actual issue