Multi-Port EFI Kits

FAST XFI Street Engine Management System Retro-Fit Kit 304003 All new from FAST, the XFI Street Engine Management System gives you a cost effective system with the flexibility of laptop tuning. This new system uses the same wiring as the FAST EZ-EFI and...

FiTech 500HP LS3/L92 92mm Ultimate EFI System 70011 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 everything...

Holley EFI LS1/LS6 (24X/1X) Engine Main Harness for HP EFI/Dominator EFI 558-102 This harness is designed for LS1/6 Engines, from 1997-2004. This harness interfaces with 24x Crank and 1x Cam sensors.

Holley Terminator X Max GM LS Standalone ECU & Wire Harness 550-926 - 24x/EV1/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 550-935 - 58x/EV1/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...

FAST EZ EFI Fuel Pump Relay Harness

FiTech 1000HP LS1/LS2/LS6 102mm Ultimate EFI System w/Trans Control 70031 The Ultimate LS1/LS2/LS6 1000 HP Intake Manifold Kit with 102mm throttle body and trans control are a complete self-tuning induction systems for LS engines designed for the...

FiTech Ultimate LS7 750HP EFI Kit 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 everything needed to...

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...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-910T - 58x/EV1 Without 3.5" Handheld 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...

FiTech 1000HP LS1/LS2/LS6 102mm Ultimate EFI System / Long Cathedral Intake 70032 The Ultimate LS1/LS2/LS6 1000 HP Intake Manifold Kit with 102mm throttle body is a complete self-tuning induction system for LS engines designed for the do-it-yourself hot...

FiTech 1000HP LS1/LS2/LS6 102mm Ultimate EFI System w/ Trans Control 70033 The Ultimate LS1/LS2/LS6 1000 HP Intake Manifold Kit with 102mm throttle body and trans control are a complete self-tuning induction systems for LS engines designed for the...