i blew ringlands at 20+ and at 7psi chris
i think there is some anomaly in the cg that makes it randomly let go , hit the throttle wrong or whatever ? because i had engines that lasted months then suddenly randomly failed
if you lift the throttle and then boot it it goes from 1/2 a bar of vacuum to 1/2 a bar of boost in milliseconds, and i personally think that the 90,s ecu cant pull back the spark advance quick enough, ed,s nistune basemap i had went from 50 deg at cruise, then pulled back to about 10 deg under boost
