Octane, tuning, and other in-cylinder transient factors aside, unless we're talking same set-up, same (type of) dyno, etc, I would take that claim with a pinch of salt.
Even if it can be achieved and verified, how long is the motor holding together as torque levels climb past mechanical tolerances? You can crack a ringland if combustion pressures get high enough, even without evidence of autoignition/knock events.
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Enjoy it. Destroy it.
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