EFI Programmable 8 Channel Injector Driver Module With Harness4 to 10 amp Peak Current Settings1.0 to 2.5 amp Peak Hold Current Settings0.5 to 1.0 ohms Peak Hold Duration Settings Holley 554-142 EFI Programmable 8 Channel Injector Driver Module With Harness Features: Specifically designed to integrate a secondary set of high peak current injectors with a Holley EFI Dominator ECU Compatible with both negative and positive triggers, facilitating installation in various EFI applications, whether using a stock or aftermarket ECU Eight programmable channels for precise control of injectors Features an easy-to-wire Tyco Super Seal Connector Comes with eight pre-programmed injector current curves Injector.