New Arrivals/Restock

Connector Kit W/Terminals, Fast Main
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.
Features only the connectors, seals and terminals without any wires. Great to have when you're custom building a harness from scratch.
Fuel Injector Connector
This kit works well for installers who like to have back-up parts or whose needs require the most flexibility in order to integrate factory components or pre-existing aftermarket harnesses into our XFI ECU.
Wiring Harness
XFI Main Harness Connectors