HELLO I RECENTLY CHANGED MY FUEL FILTER AND SINCE COULD NOT START THE CAR, AFTER ATOL OF TRYS I BOUGHT A SECONDHAND PUMP HAD THE CODES REMOVED AND SWAPPED THE ECU OF THE PUMP ONTO THE CAR, AS I WAS TOLD THIS WAS THE FAULT, I ONLY HAD MY BLUE CHIP KEY AVALIBLE AND TRIED TURNING ON THE IGNITION FOR 60 SECONDS THEN OFF THEN TRIED TO START IT BUT NOTHING.

DO I NEED MY BIG CENTRAL LOCKING KEY OR WOULD THIS MAKE ANY DIFFERENCE?

THANKS STEVE.