Sorry to hear that.
Not just a/f to manage - have to watch the air temps as well - were you intercooled at 12 lbs of boost? Still sounds like a bad tune.
In my last car I had detonation and destroyed an engine on 13 lbs of boost intercooled...
Also had some head & valve damage from the blow through of the broken pistons
Went with a forged and built shortblock and ported the heads - and stepped up to a Vortech YSI race blower - later ran it to 23 lbs of boost at only 6,500 rpm (combo was good to 30 lbs + if revs allowed spool up) - new set up was huge $ but was bulletproof
Hope you make out okay.