I am confused as to which order the ecm will trigger the injectors compared to the firing order on a 4cylinder motor. My firing order is 1-3-4-2. The stock sunbird schematic batch fires 1+2 together and 3+4 together. For my firing order1342 I wired 1+4 together and 2+3 together. How is this supposed to be wired? Should i put 1+3 together and 4+2 together so the injector is fired in advance for the next cylinder to spark?

 

749 is not SEFI so I don't think it matters. I'm running it on a V8 with saturated injectors (high impedance) so it's wired like a Syclone/Typhoon and fires in batch mode. I believe the Turbo Sunbird wiring is for peak and hold injectors (low impedance) but still fires batch mode.