nowadays rechip also got lauch control function edi lor... i've seen a few on honda b16a's
the logic is pretty simple.
if the chipped ecu detect 0kmh speed the rev is limited to 4k rpm (as an example) so during stand still, the rpm won't go beyond that setting.
if it detects 2kmh onwards rev is no longer limited. so i suppose you can make a switch to activate that instead of being permanent. only that i know nuts about electronics... hahhaha... no action talk only.. NATO