Not saying you don't have problems, but based on what you said the diagnosis doesn't make sense. EPC means a problem with the engine speed sensor, MAF or throttle body, none of which can plausibly be triggered by metal in the oil pan. Ultimately, your engine is only trashed if has lost oil pressure or compression which should give you oil pressure warnings or misfires. If it is drive-able, I would take it somewhere for a 2nd opinion.

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Prost!