fuck knows mate,,,,,,,,,,,doubt he can tell either unless he takes the ecu apart and tests it


could have burnt out the loom,,,,,,,,, fired the starter,,,,,,,,,, hel theres loads of things it could be


if its a MFI erst you got then its more likley a breather hosue is undone

infact i think the ecu has a 1 way resistor in it to prevent negative frying , not to mention that live against live wont go untill the igniton is turned off and the switched live goes negative