Multi-Port EFI Kits

Holley Terminator X Max GM LS Standalone ECU & Wire Harness 550-929T - 24x/EV1   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 550-926T - 24x/EV1 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 your engine,...

Holley Terminator X Max GM LS Standalone ECU & Wire Harness 550-932T - 24x/EV6 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 your...

Holley Terminator X Max GM LS Standalone ECU & Wire Harness 550-934T - 24x/EV1 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 your...

Holley Terminator X Max GM LS Standalone ECU & Wire Harness 550-920T - 24x/EV1   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 GM LS Standalone ECU & Wire Harness 550-920T - 24x/EV1 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 your engine,...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-931T - 24x/EV1 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 your engine,...

Holley Terminator X Max GM LS Standalone ECU & Wire Harness 550-918T - 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...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-928T - 58x/EV6 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...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-904T - 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...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-919T - 24x/EV6 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 your...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-916T - 24x/EV1 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 your...