Right, here we go. I had a second decat a while ago and needed a FCD. I purchased a Blitz boost jumper and after finding out the instructions were wrong, managed to fit it. No problems at all until now. I took it out to sort my wiring out. Tried fitting a Blitz SBC harness (with no luck, dodgy idling and dont know which wires are the correct ones to tap into) and refitted my FCD. I took the harness out which just left the FCD. It is wired in exactly the same as it was before but now: First start up a bit of a struggle, tick over is ok but when i switch the ignition off it just cuts out without waiting for the turbo timer. Second start..... none existant. I took it out and everything works fine so is it a problem with my FCD. Anyone any ideas?Anyone else had this trouble before?