Multi-Port EFI Kits

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 EFI LS Main Harness to LS3 Style Map Sensor Adapter 558-416 Holley EFI LS main harnesses have a MAP sensor connecter designed for use with an LS1/2 style MAP sensor. The 558-416 is an adapter harness that can be used to adapt any LS harness that...

Fast EZ-EFI Color Display Touchscreen Hand-Held  Upgrade your first generation EZ-EFI Hand-Held to a Color Touchscreen! Serving as the Setup Wizard initially, it then becomes an electronic gauge screen. The hand-held has various advanced features...

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...

(Limited time only - Save $50 at checkout) FiTech 750HP LS1/LS2/LS6 102mm Ultimate EFI Kit 70003 (Forced Induction Compatible) FiTech Ultimate LS Instructions Complete Self Tuning Induction Systems for LS engines designed for the do-it-yourself Hot...

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 control...

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 Gen IV Standalone ECU & Wire Harness /Trans Control/DBW - 58x Late Truck w/6L80 - 550-928-6 58x Crank - 4x Cam - EV6 Injectors - Drive-By-Wire Throttle Body and 6L80/90 Transmission Control - 3.5-inch Touchscreen ...

FiTech 500HP Ultimate LS1/LS2/LS6 92mm EFI Kit 70001 FiTech Ultimate LS Instructions Complete Self Tuning Induction Systems for LS engines designed for the do-it-yourself Hot Rodder to the professional EFI tuner! This system is ready to go with...

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 750HP LS3/L92 102mm Ultimate EFI System 70013 (Forced Induction Compatible) FiTech Ultimate LS Instructions Complete Self Tuning Induction Systems for LS engines designed for the do-it-yourself Hot Rodder to the professional EFI tuner!...

Holley GM Dominator Drive-by-Wire EFI Wiring Harness 558-406 Plug and Play with Holley Throttle Pedal Part Number - 145-160 Designed to work with GM Throttle body P/N's - 12570790 and 12580760 Designed to work with GM Throttle Pedal P/N - 10379038...