XFI: XFI kits use the surprisingly user-friendly C-Com XFI software that lets the first-time user tune via laptop like a pro in no time. Beyond that, FAST has an extensive network of racers and tuners across the country, as well as the FAST support team to assist novice tuners.

How much?
$1,800 for the Base EZ-EFI kit, $2,150 for the Master kit with fuel system. The basic XFI ECU, software, wideband oxygen, Comm cables, and harnesses starts at about $2,200 and goes up to around $4,500, depending on options.

Source:
Fuel Air Spark Technology
877-334-8355
www.FuelAirSpark.com

GM Performance Parts
What packages do they offer?
Ram Jet 350 and Ram Jet 502 fuel-injection systems, as well as full Ram Jet crate engine packages. For LS guys, GMPP engineered developed the LS Controller and Harness kit to run the LS2/LS3 family, and the LS7. The LS Controller/Harness package is a key component for the revolutionary new E-Rod package.

Easiest kit?
GMPP only offers one system for each engine family, but luckily each is engineered to be extremely user friendly and near foolproof.

Best for racers?
The kits themselves don't have race options per se, but they can be bundled with any number of race-ready GMPP performance parts to create an ideal track package.

What do you get?
Every component needed to run fuel injection on small-block, big-block, and LS engine families

What options are available?
The kits are basically as is, since GM engineers have it figured out for you, but you can opt to buy just the GM Performance Parts Ram Jet intake and run you choice of EFI controller.

How do I tune it?
All of the GMPP systems come with a factory tune. For the Ram Jet systems, you'll need a MEFI-4 controller. For the GMPP LS Controller and Harness kits, we hear that LS Edit works nicely.

How much?
Around $800 for the GMPP LS Controller and Harness kits. Around $1,500 for our complete Ram Jet systems.

Source:
GM Performance Parts
800-577-6888
www.GMPerformanceParts.com

Haltech
What packages do they offer?
Haltech has plug-and-play applications, but specializes in custom systems that run everything. The basic Sprint series (Sprint 500 and Sprint RE) is a simple full stand-alone ECU with a minimal number of options. The Sport series (Sport 1000 and Sport 2000) use Haltech's flagship ECU, and is universal. The Platinum Pro series (Pro plug-in and Pro harness) is Haltech's most advanced system.

Easiest kit?
The Sprint 500 series is as simple as they come. With a reduced number of outputs and inputs, it can be installed on engines from one to eight cylinders to provide ignition and fuel control for pretty much any application.

Best for racers?
The Platinum Sport 1000 and 2000 will be the systems of choice for universal installations, or most plug-and-play applications in the lineup. These provide plenty of options, with inputs and outputs to control engines from 1 to 12 cylinders. For the 6-, 8-, 10-, and 12-cylinder, the Sport 2000 will have all the necessary options. Both of these systems provide optional inputs and outputs for controlling different accessories, monitoring many sensors, and all of Haltech's ECUs can be directly connected to either Racepak or AIM Dashes for data acquisition and telemetry options for the hard-core racer/enthusiast.

What do you get?
With every Haltech package you get the ECU box or brain, plus either a universal or plug-and-play harness. Race kits consist of ECU, harness, wideband oxygen, and dash.

What options are available?
Haltech has plug-and-play kits, universal wiring kits, and pro plug-in ECUs that replace the stock ECU on some vehicles. They also have sensors, connectors, coils, injectors, and most accessories needed to complete a full installation on any vehicle.