FAST® XFI Sportsman™ Fuel Injection Kit for GM LS Applications

Memphis, TN – The FAST™ XFI Sportsman™ Fuel Injection Kit for GM LS Applications is a fully software-tunable EFI system designed for LS engines.

Featuring the XFI Sportsman™ ECU, this kit provides total flexibility in tuning and monitoring engine fueling, acceleration fuel, timing and air/fuel targets. While offering PC based, on-the-fly tuning, the system also provides a self-tuning strategy that can be enabled or disabled. A user-configurable auxiliary input channel and full-function data logging are also included. It supports both naturally aspirated and boosted applications up to 5 bar and is also compatible with wet nitrous and has nitrous timing retard control. Built-in CAN network support for the EZ-TCU™, EZ-LS™, XIM™ and eDash means users can easily plug-and-play those components with the included CAN network wire. The kit also features a Bosch wide-band 02 sensor, built-in diagnostic LEDs, a water-resistant ECU enclosure, and includes a premium, mesh-type wire loom multi-port harness.

Incorporating the proven EZ-LS™ Ignition Control for spark duties, the kit installs easily and allows you to fully control your LS engine. Tuning with the FAST® system is done conveniently in real time, unlike inferior factory EFI based kits that require constant ECU reflashing whenever you want to make changes. The system requires a laptop for tuning and uses proven FAST® C-COM® software, which comes packaged along with the necessary USB connectivity cable. The system offers the choice of the load-indexed Speed Density fuel strategy for most users or the Alpha-N strategy that was specifically added to serve drag racers looking for absolute consistency.

About FAST®

In 2001, FAST® was acquired by the COMP Performance Group™ and moved its headquarters to Memphis, TN, to become the popular electronics company that we know today. After more than a decade in the performance aftermarket industry, FAST® is the recognized leader in advanced EFI technology. Now, not only does FAST® offer the components to adapt virtually any engine to fuel injection, it is also an emerging force in the ignition market. With the latest in easy-to-use electrical components, the experts at FAST® have everything that you need to make high-tech horsepower. 

Additional information about FAST® and its products can be found at or at 1.877.334.8355 M-F 7am-8pm CST. Also visit us on Facebook at, on Twitter at or on YouTube at