XFI Kits and Accessories

Welcome To The Next Level Of  EFI Performance!
Almost since they were first introduced, computer-controlled, multi-port fuel injected (EFI) engines have set a new standard for reliability and performance. But when you are looking to push your EFI engine's performance to the next level for an extreme street or all-out race application, factory computers -often called ECUs, display a crippling lack of flexibility.

Horsepower-Friendly, Right Out Of The Box!
Aggressive camshaft profiles, high compression, and most other horsepower-increasing modifications seldom run well with even the most radically tuned factory ECU. And if the project at hand is swapping a late model EFI engine into an older vehicle, prospective new "fuelie" guys have to gain a whole lot of electrical knowledge in a hurry, or dig that tired carbureted setup out of the pile of obsolete parts in the back of the garage. That's where FAST™ steps in to save the day with XFI™ -the easiest to install and tune aftermarket EFI system in the industry!

Go FAST™, And Throw Away That Weak Factory Computer!
Designed as a standalone  (EFI) system that totally replaces your factory computer and wiring harness, the XFI™ system eliminates the performance-compromised OEM controller, replacing it with an ECU and wiring harness that are surprisingly easy to install, a joy to tune with any Windows-based computer, and capable of performance that will blow your mind.

An XFI™ System To Suit Every Need
In an effort to provide racers and street performance enthusiasts with the widest possible range of available configurations, FAST™ offers XFI™ ECUs in standard, onboard data logging, and Intelligent Traction Control™ versions. All three are available to control either 4 through 8, or 16 injectors, with the 16-injector version able to support over 4,600 naturally aspirated horsepower!

Quick And Precise Tuning –Only From XFI™
The XFI™ system allows you to fine-tune like never before using C-Com™, its easy-to-navigate software. C-Com™ is completely configurable and allows you to tune your engine for blazing performance without having to work around lame preset factory parameters.

Compatible With Nearly Any EFI engine
The FAST XFI™ EFI system is compatible with all common factory EFI engines, including GM TPI, LT1, GENIII/LS1–LS7, Ford 5.0/EFI Windsor and Modular 4.6/5.4, and Dodge 5.7/6.1 Hemi applications. And if you want to build your very own mega-horsepower EFI small block or big block from scratch in the quest for drag strip supremacy, FAST™ has the components to adapt nearly any engine to state-of-the-art, race-winning EFI using the XFI™ ECU and one of our 4150 or Dominator style 4-barrel throttle bodies. Ever wondered how a 426 Hemi, 351C, or L88 rat motor would run with fuel injection? FAST™ has the components to help you find out*! A sixteen-injector unit is even available for ultra-high horsepower race engines that can’t get enough fuel with a mere eight fuel injectors.

One of the outstanding features that sets the XFI™ EFI system apart from the competition is its revolutionary Qwik Tune™ technology. Qwik Tune™ lets you preprogram up to four different performance tunes –any one of which can be activated by a mere flick of an in-car switch. So you can drive to the drag strip on your “street” tune, flip your Qwik Tune™ switch, and blow away your competitor with your 2-stage nitrous tune. Speaking of nitrous, the XFI™ EFI system can control up to 4 stages of nitrous with its optional power adder harness. And a host of other standard features and available options makes the XFI™ EFI system stand head and shoulders above the crowd.

XFI™ ECU –Engineered For Toughness And Ease Of Installation A surface-mounted computer board and an anodized billet aluminum enclosure give the XFI™ great looks and superior durability -even in extreme environments. A comprehensive instruction manual, available installation DVD, and clearly labeled wiring harness make installing an XFI system a lot easier than you might think -and industry-leading tech support is a mere phone call or email away if you run into a snag. Whether you’re a novice tuner or a seasoned pro, the XFI™ system delivers unrivaled power, ease of use, and industry-leading technical support -making it an unbeatable choice for your next high-performance EFI engine project. XFI™ Wiring Harnesses –Technology That You Can Rely On FAST™ XFI™ Wiring Harnesses are fully pre-assembled and tested, making it easy to install an EFI motor into nearly any vehicle. XFI™ harnesses feature all OEM-grade connectors, high temperature oil resistant wiring and puncture-resistant outer sheathing for years of dependable service. All connections are butt connected, crimped, and soldered for maximum mechanical and electrical integrity. Like all other FAST™ wiring harnesses, these harnesses feature clearly labeled connections, making installing that cutting-edge XFI™ system easier than you ever imagined. Further questions about our wiring harnesses? Simply Email us, or contact EFI HELP™ at 877-334-8355.