we modified a 95 cobra with gt 40 heads, bbk headers, cold air-intake, 75mm throttle body, ford racing 30lb red top injectors, granitelli maf and are having problems with it idleing. it sounds perfect once over 1000 rpm but will cut out as soon as we let it idle. also the car does a self-diagnostic every time we turn the key on where the fans will self test at high and low. when the fan kicks in with the vehicle on, the idle jumps to 1900 rpm on its own and spits a 0543, 0542 codes for the fuel pump. is it possible that the computer just needs to be re-programmed or is it something else?