2JZ Fuel Injector Resistor, commonly used on a 1JZ engine when swapping out the stock injectors with LOW IMPEDANCE fuel injectors, such as stock 2jz 550cc injectors. This resistor is required when retaining the stock 1JZ or 2JZ ecu and running low impedance injectors. This resistor could also be used with other types of sequential ignition systems on other vehicles, stock or aftermarket.