I replaced msd 85 engine ecu on e70 5.0l x5 with boot mode. All good, start the car, test drive, fit all covers back. Ready for customer to take and when starting again it wanted to start but faild. stores code 2e77 igniton supply voltage. No spark, coils earth is ok voltage supply ok ecu does not puls coils. cheked ecu for soldering mistakes (none). No pinched wires. Annyone who can give good news.