Multi-Port EFI Kits

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 Transmission Control Harness 70050-5 Transmission control harness for FiTech Ultimate LS EFI Kits

FAST EDash XFI Touchscreen Tuner 301517 Up to 20 Live Data Readings, On-The-Fly Tune Changes & More; By Single Connector The XFI eDash makes harnessing the power of FAST XFI systems even easier. The unit lets users view multiple sensors in...

FAST EZ EFI Fuel Pump Relay Harness

FiTech Ultimate LS7 750HP EFI Kit w/ Transmission Control 70018 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...

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 LS7 500hp EFI Kit 70015 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 LS7 500HP EFI Kit w/ Transmission Control 70016 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...

FiTech Ultimate LS Truck 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 LS Truck 750HP EFI Kit W/ Transmission Control 70009 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...

FiTech Ultimate LS Truck 500HP EFI Kit W/ Transmission Control 70007 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...

FiTech Ultimate LS Truck 500HP EFI Kit 70006 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...