Tying to get to the bottom of a problem with my Cat bd turbo problem, sled suddenly died like you hit the kill switch. We have tested more things than I can remember, but essentially it has s adequate fuel pressure, power to controller, grounds good. Checked psi at pump, hooked pump up to 12v, you name it. You can unhook the bd harness and connect back to factory ecu and it STARTS fine. hook back up to bd harness and wont fire. We have checked fuel pressures, injector stuff, sent box and harness back to bd and they said they installed it on a sled and it worked fine. Sent it back to us and it wont start. But you unplug bd stuff, plug in factory ecu and it starts. So has to be in box or wiring harness of the bd stuff, imo. Spent countless hours w BD and my dealer trying to research problem. Sled has NOT ran the last 30 days, and Im weak on Boondocker turbos to say least. Im not a big fan of 4m tech advice, but my patience is at its end. Has anyone had any experience like this? Suggestions?