1. While many/most won't want to do it to their bikes, I'm now certain that if you ride it like a boy racer, the stock ECU will change the mapping and throttle response temporarily to lightning fast. Maybe it's to allow the bike to wheelie; I don't know; but after it happened to me once, I tried to replicate it, and it did it again, so obviously, it has one of those logarithms designed to sense and then perform the way you're riding.
2. Duane's example pointed out that unless the contacts are clean and the thing is fully seated, the ECU can still partially work (you'd think it would either work, or not at all), but will cause all sorts of problems, making people think something else crazy is wrong. It's rare, but several people in the K12 community with older bikes had strange gremlins, took out the ECU, blew out the contacts with compressed air, put it back together, and it fixed it. Since it takes less than a minute to do it, if you have strange behavior and nothing else jumps out at you, making sure the ECU is seated (on a newer bike, doubtful the contacts could have any dust in them) is worth a check.
2019 K1600GT Option 719 Blue Planet Metallic, Brown Seat, Forged Wheels
2014 Yamaha FZ-09