New Arrivals/Restock

FAST offers several main harness options to accommodate most customers' needs. The XFI Main Harness is responsible for connecting your XFI ECU to sensors as well as digital dashes, EGT modules, and various optional accessories. The Main Harness also handles communication between the ECU and ignition devices. Main harnesses are available in TPI, LT-1, LS-1 through 9 (including truck/suv designs), Modern Hemi, Carburetor Conversions and even Rear-Engine Dragsters and Boats. FAST also offers Main Harnesses that come terminated on the sensor side but non-terminated on the ECU side to allow for a truely custom fit. All terminals, seals and connectors are available individually, so don't hesitate to try your hand at crafting your own custom harness from start to finish.
Fuel Management Wiring Harness
Wiring Harness
Works well out of the box with GM LT1 applications as well as builds that are converting from carburetor to throttle body injection or muliport fuel injection.
XFI Harness designed for engines whose sensors feature GM LT1 style sensors.
XFI Main Harness 301101 is great for conversions from carburetor to fuel injection or existing LT-1 based projects. Terminals are generally LT-1 based.
XFI Main Harness LT/Carb

Vehicle Fitments:

Year	Make	Model	Submodel
2006 - 2007	Cadillac	CTS	V, Base
2011 - 2012	Chevrolet	Camaro	2SS, 1LT, 1SS
2010 - 2014	Chevrolet	Camaro	LT, LS, SS
2014	Chevrolet	Camaro	Z/28
2012 - 2014	Chevrolet	Camaro	ZL1
2008	Chevrolet	Corvette	427 Limited Edition Z06
2005 - 2013	Chevrolet	Corvette	Base
2010 - 2013	Chevrolet	Corvette	Grand Sport
2013	Chevrolet	Corvette	LT, 427
2006 - 2013	Chevrolet	Corvette	Z06
2011	Chevrolet	Corvette	Z06 Carbon
2014	Chevrolet	Corvette	Z51, Stingray
2009 - 2013	Chevrolet	Corvette	ZR1
2005 - 2006	Chevrolet	SSR	Base
2009	Pontiac	G8	GXP, GT, Base
2005 - 2006	Pontiac	GTO	Base