Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NKT O2, GM, LS2, LS7, 58x Crank Sensor, KitHolley HP EFI ECU and Harness Kits 550-603NSKU: 550-603N$3,170.95PriceQuantityAdd to Cart