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Sorry to hear about the damage OP. 120k is a lot of miles and map7 with the E85 flash is a pretty aggressive tune. It's 20psi and around 12.5 degrees of timing up top. If you were over boosting, running lean, etc, the JB4 would kick in but maybe it was just its time to go.
Definitely check out your logs if you have them to verify timing looks clean and AFR looks on target.
Mike
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