Originally Posted by NSFW
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.
Originally Posted by ASF Machine
This isn't a metallurgy or manufacturing issue IMO.
It's in the tune, mostly.
Stock ecu/cobb is more than capable of controlling these cars. The knock system works great.
ECU doesn't crack the liner, user error cracks the liner