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 have plenty of new 704 blocks we built being ragged at 450 whp using Hydra EMS I've tuned. I'm not worried about them I'm worried about motors I've shipped or am selling for use with oem ecu. For all them we reinforce the block but also the Hydra guys because they are primarily 600+Hp customers.
It's a real issue for everyone regardless of engine management. For our customers building motors with us, $650 upgrade to reinforce is a no brainer.