Multi-Port EFI Kits

Holley Terminator X Max GM LS Standalone ECU & Wire Harness 550-931 - 58x/EV6/DBW Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of...

Holley Terminator X Max GM LS Standalone ECU & Wire Harness 550-918 - 58x/EV6/Trans Control Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete...

Holley Terminator X Max GM LS Standalone ECU & Wire Harness 550-928 - 58x/EV6/Trans Control/DBW Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete...

Holley Terminator X Max GM LS Standalone ECU & Wire Harness 550-917 - 24x/Multec 2/Trans Control Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete...

Holley Terminator X Max GM LS Standalone ECU & Wire Harness 550-916 - 24x/EV1/Trans Control Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-905 - 58x/EV6 Take control of your LS engine with Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine,...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-904 - 24x/Multec 2 Take control of your LS engine with Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine,...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-903 - 24x/EV1 Take control of your LS engine with Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine,...

FiTech Ultimate LS Standalone ECU & Wire Harness w/ Trans Control 70051 This kit comes with the ECU & Wire Harness only from the LS Ultimate EFI Inductions Systems. This kit does come with transmission control. This self-learning Ultimate LS...

FiTech Ultimate LS Standalone ECU & Wire Harness 70050 This kit comes with the ECU & Wire Harness only from the LS Ultimate EFI Inductions Systems. Does not have transmission control. This self-learning Ultimate LS ECU is the best solution for...