Ouch. Are you using EcuTek? They have failsafes that should prevent a lean condition...knock control and AFR failsafe should always be on especially when your dialing your tune in. In your second picture is the valve bent? You may have Possibly broke a valve spring, dropped the valve, hit the piston, got smooshed then went boom. Sorry for your loss!
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‘08 coupe w/Stillen SC, Custom A2A, SD, ID1050x, e85, eagle rods, high temp coated pistons, P&P heads, JWT C2, manual swap, stage 2 clutch. EcuTek(Eugene)
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