78411 Ultimate LS 500 HP EFI System Master Kit
InfoVehicle Info Needed
FITECH FUEL INJECTIONPART NUMBER: 546-78411

78411 Ultimate LS 500 HP EFI System Master Kit

$2,48499
ShippingShips on 09/17/2026
Lowest PriceLowest Price Guarantee

Ultimate LS 500 HP EFI System With Short LS3 Port Intake
  • Go Fuel In-Tank Fuel Pump 600 HP Module
  • Go Fuel Tight Fit Regulator With Pressure Gauge & Go Spark LS3 Style Coil 8 Pack Master Kit

    FiTech 78411 Features:

    FiTech has some of the best-engineered and priced throttle body systems on the market. Their LS EFI 500HP fuel injection systems bring incredible ingenuity to the market. FiTech fabricated many aluminum parts for these systems, including the low-profile 92mm billet throttle body, high-volume billet fuel rails, and an intake manifold with 1,500 to 6,500 rpm powerband and 3mm construction.Sequential spark and fuel control mates 36 lbs./hr. injectors, a plug-and-play wiring harness, and a color touchscreen self-learning ECU. This allows for programing two fan control outputs, most tach and speedometer output drivers, and target AFR and timing on the fly. A suction cup mounting bracket puts the controllers at your fingertips and allows for impressive visual aids.The optional transmission control feature is suitable for 4L60, 4L65, 4L70, or 4L80 GM transmissions. FiTech LS EFI 500HP fuel injection systems with transmission controller provide impressive power and performance, while allowing you to save a little green for your next tires. Our LS3 style coils will help complete your LS EFI swap or even update your modern muscle car with a fresh jolt of energy. The Go-Spark LS Coils were developed to deliver optimum output with a quality ­fit and reliability. The Coils bolt-in place of the originals and accept the sealed, locking connector and plug wire terminal for a simple upgrade. Upgrading to electronic fuel injection is one of the best ways to improve the performance of your classic vehicle and FiTech is making the swap even easier with their new In-Tank Fuel Pump Module.

    The universal assembly allows you to easily mount the required high pressure fuel pump in the best location, the tank! The assembly secures the supplied high pressure pump in tanks with depths ranging from 6” – 15”. The fuel is pumped to a top billet mount assembly to -6 AN male fittings for the supply and return ports. The billet mount was designed with a low profile and places the ports in a parallel position to help when routing the fuel lines. The vent port is on the other side to ease routing the line near the fill tube. To ensure uninterrupted delivery of clean fuel, two sizes of sock/filters are provided, a standard 11 square-inch design and a large, 35 square-inch version. The Universal In-Tank Pump Module is supplied with everything you need for installation including a high output 255 LPH pump capable of supporting up to 600 horsepower engines (normally aspirated). Push-lock style AN fittings are also included along with gaskets and wiring terminals. When it comes to upgrading to electronic fuel injection, setting up a proper high pressure fuel system is paramount to the overall performance of the vehicle.

    • Black anodized aluminum parts for style and corrosion resistance
    • High-flow, cable-operated throttle body
    • Bosch wideband-controlled
    • Stainless oxygen sensor bung
    • Compatible with car and truck coils
    • AN fittings and fuel crossover
    • Works with custom cams
    • Designed for applications making at least 6 in. of vacuum at idle
    • 24X and 58X crank and cam compatible
    • Programmable touchscreen hand-held controller with data log features
    • Adjustable for tanks from 6” to 15” of depth
    • Billet aluminum top features -6 fuel bosses
    • Low profile for improved clearance and improved fuel line positioning
    • Supplied with 255 LPH pump, seals, fittings and filter/socks

    Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

  • Part TypeFuel Injection System
    BrandFITECH FUEL INJECTION
    Package Height18.0
    Package Width18.0
    Package Length28.0
    Weight46.0 PG
    Part CategoryPerformance Parts
    Part FitmentSemi Universal
    Vendor Part Number78411
    Package Qty1
    Package TypeEA
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    Some parts are not legal for use in California or other states with similar laws / regulations
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