Multi-Port EFI Kits

Holley EFI GM T-56 Magnum Transmission Harness for Terminator X Max ECU  T-56 Magnum Transmission Harness for use with Terminator X Max ECU's on V3 Build 100, Holley EFI V6 Build 300, or later.   T-56 Magnum Transmission Harness - Terminated...

FiTech Ultimate Rebel LS 1000HP 102mm EFI System Cable Drive w/ Trans Control 70093 Elevate your LS engine conversion with the Ultimate Rebel LS EFI System – a perfect fusion of aesthetics and performance. Experience the power of modern...

FiTech Ultimate Rebel LS 1000HP 102mm EFI System Cable Drive w/o Trans Control 70092 Elevate your LS engine conversion with the Ultimate Rebel LS EFI System – a perfect fusion of aesthetics and performance. Experience the power of modern...

FiTech Ultimate Rebel LS 750HP 102mm EFI System Cable Drive w/ Trans Control 70091 Elevate your LS engine conversion with the Ultimate Rebel LS EFI System – a perfect fusion of aesthetics and performance. Experience the power of modern...

FiTech Ultimate Rebel LS 750HP 102mm EFI System Cable Drive w/o Trans Control 70090 Elevate your LS engine conversion with the Ultimate Rebel LS EFI System – a perfect fusion of aesthetics and performance. Experience the power of modern...

FiTech Ultimate Rebel LS 500HP 92mm EFI System Cable Drive w/ Trans Control 70089 Elevate your LS engine conversion with the Ultimate Rebel LS EFI System – a perfect fusion of aesthetics and performance. Experience the power of modern...

FiTech Ultimate Rebel LS 500HP 92mm EFI System Cable Drive w/o Trans Control 70088 Elevate your LS engine conversion with the Ultimate Rebel LS EFI System – a perfect fusion of aesthetics and performance. Experience the power of modern...

Holley GM Dominator Drive-by-Wire EFI Wiring Harness Early Truck 558-429 Dominator EFI GM DBW Harness-Early Truck. Compatible with GM part number 10379038. Only the following factory drive-by-wire throttle bodies have been pre-calibrated and...

Holley Dominator EFI ECU Vehicle Management Systems 554-114 Dominator® EFI Vehicle Management Systems are intended for non-emissions street and racing engine applications. In addition to the transmission control, drive by wire, and dual wideband...

Holley HP EFI & Dominator EFI LS1/6 (24X/1X) Engine Main Harness, Extended Length 558-133 This harness is designed for LS1/6 Engines, from 1997-2004. This harness interfaces with 24x Crank and 1x Cam sensors. Plug and play with Dominator, HP,...

Holley EFI Terminator X Wideband Adapter Harness 558-463 Service harness sensor adapter for Terminator X and X Max ECU only.

Holley EFI LSX Injector Harness for EV6 Injectors HP EFI/Dominator/Terminator X 558-201 LSx Injector Harness for HP EFI, Dominator EFI and Terminator X.