i have a rb20det it doenst have injector pulse on cyclinders 1,3,5. i have changed the ecu over with another ecu that works made no differance at all i have allso test all the injector wires back to the ecu pins and they are fine. what can it be?????? i did notice that the injectors have power running to them all the time even when the cars switched off is that ment to happen?