Originally Posted by Element Tuning
It's just that the oem ecu advances timing until it knocks if timing allowance is high enough. The driver isn't aware it's detonating and it blows up eventually. I'm not going to tell Everton they need a hydra or a standalone ems but knock control s better/more tunable while allowing limits to automatically "LIMP" and CEL to alert the driver.
I'd blame that sort of thing on the tuner, not the ECU. If the tuner gives the car a tune that can run 100% ignition advance without knocking, then there will be no problem.
And if the tuner gives the car a tune that advances timing past the point of detonation, then the tuner just plain screwed up. The OEM knock control behavior has been documented well enough for long enough that there's just no excuse for a tuner to be surprised when the ECU turns the ignition advance multiplier up to 100%.
Plus you can set up the stock ECU to switch to wastegate boost if it sees non-trivial knock. It's not quite as blatant as a CEL, but it's still a pretty clear sign that it's time to stop playing and start troubleshooting.