The engine feels like it’s running fast, but it’s really slow compared to ECU’s ability to observe it and respond to it. A single missed signal would just result in a misfire.
Like the notoriously hard to stall Citroën 2CVs and Dyanes, where roughly a third of the total weight of the engine was the ridiculous flywheel.
They could chirp the tyres in first, second, or third gear if you got all that mass spinning fast enough, not from power but from momentum.
If you're lucky ecu might crash or run rich in that one rpm/load point, if not it might run lean entire highway drive, if say a bitflip happens to flip lambda probe settings to always show mixture being too rich.
So no I imagine there's actually quite a lot of wiggle room to be off. Less so if you want it to last a million miles. But 30k?
There is a lot of protection in modern engine, like retarding timing when there is a knock or long/short fuel trims to correct for any changes in the sensors.
