FAST EZ EFI Hand-Held Programmer

If you own a state-of-the-art EFI system from FAST, and now want to fine-tune the engine parameters for the best possible performance, here's what you need! The FAST EZ-EFI hand-held programmers are designed specifically for the FAST EZ-EFI systems, making this a plug-and-play unit. You can adjust all the fuel management parameters on-the-fly via the convenient controls and easy-to-use screen. Engine Tuner for FAST EZ EFI Systems. Plug n Play cable connection. Includes screen hide/sleep function, expanded diagnostics, expanded data screens and intuitive navigation. Provides the only necessary interface to the system's ECU. Can be disconnected and stowed after initial setup. USB-equipped for update and upgrade capability.