The FAST™ XFI™ system precisely balances fuel, air and spark. Plus, it allows you to fine-tune like never before. The XFI™ system comes with easy-to-navigate software that’s completely configurable and allows you to set the priorities. With 400% faster processing, no more flat spots in the power curve or settling for “close enough.” XFI™ features revolutionary Qwik Tune™ technology that lets you preprogram up to four different EFI profiles. Then — with the flick of an in-car switch — you select the power characteristics you need! Additionally, a surface-mounted computer board and billet ECU enclosure give the XFI™ superior durability in even extreme performance applications. XFI™ is compatible with all common ignition types, including GM HEI, LT1, LS1, -2, -6, DIS, Ford EDIS (4.6L & 5.4L), and Dodge 5.7L Hemi applications.

The original FAST unit. Hartline Performance carries new FAST ECU's as well as used-trade in units. Configuration changes and upgrades are available. Call Hartline Performance for details and availability.

Advanced remote ECU Data Logger™ Features: • Eliminates need to have a laptop in vehicle to record data • Evaluates a wide range of parameters from up to 14 sensors • Records up to 30 minutes of data with ultra-high resolution • Accepts a push button trigger for immediate data logging • Includes C-Com WP™ software to assist in EFI tuning

Take advantage of the advanced datalog features of the XFI unit with the Hartline Performance PnP fuel-oil pressure kit. Available with or without sensors.

Plug and Play adapters make installation of your FAST system easy. Quality features like system status LED's , quality connectors and durable assemblies..Available for both FAST and XFI.

This multiposition switch is used to make use of the Qwik Tune™ technology. It allows you to switch in between 4 separate programs if so equipped.

Swapping to a distributor with the XFI system? This adapter from Hartline Performance makes it easy. The adapter re-routes the grounds and 12 volt signals. It also enables the stock Buick crank sensor to be used as a "crank Trigger"