So the data goes from the cps to the ecu then the ecu tells the pump to prime via the relay. I'm starting to think my ecu is faulty as the car has a boost issue as well. It doesn't give full boost so only produces 185bhp. Everything has been changed and checked so started to think it was electrical. Also seeing that the amal valve works off the same curcuit as the fuel pump relay does this sound possible to other people??

(The car is in standard form apart from a magnex exhaust with 3" tail pipe)

Cheers

Matt