What kind of dead is it? There were a number of failure issues with Piro ECU's
Simply as though the fuse has been removed, no lights on switch, ECU draws no power, completely dead.
It was one I fitted on a customer's American pickup when Piros first came out. The customer ran it for a year then left it stood outside at a farm for over a year without a battery fitted. I wondered if they suffered from damp ingress or had some sort of internal battery backup or something? I know the usual AEB boards but not the Piros.
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