Speaking up from the deep well of my ignorance I must say I am a sucker for gizmos that cure the incurable... Which is to say that when the ECU fails to learn or the fixed perameters do not provide enough low throttle fueling, a plug-in doodab was offered for sale that would kid the ECU that it is colder and tricks the ECU to order up more fuel. I've read that now the latest Euro 5 ECUs on some models no longer allow these "booster plugs" to function and those low throttle fuelling workarounds do nothing. Low throttle engine stalling can be a real pain as it affects my Honda Jazz and at times makes me look like a learner. If it made my bikes prone to the same or just made them very lumpy I might have tried some gadget to try a fix. Biggest problem these days is the amount of wrong / crooked stuff in social media that offers such soloutions.