There's a feed from the back of the rev counter that goes to the fuel relay acording to the wiring diagrams, It's not the dizzy mines a new one plus we've tried another to that worked on other cars. I've got 2 ecu's n borrowed a series2 won off a mate n non of them worked still had the same fault. it's like something is telling the ecu that it is overboosting when it isn't is there anything that could go faultly and course this???