Product Summary

Universal Fit, Throttle Body Injection Style, Polished

    Rebates Available

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    Key Specs

    MFG. Part #35501
    BrandFiTech
    Injection StyleThrottle Body
    Max Horsepower Rating600
    ECM IncludedYes
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    FiTech 35501 Details

    FiTech Go EFI 4 600 HP Self-Tuning Fuel Injection Systems

    When it comes to fuel injection versus carburetors, new school is just too cool. FiTech Go EFI 4 600 hp self-tuning fuel injection systems have the ECU mounted on the throttle body for greater self-containment, clean installation, and easy setup. These trick systems fit any 4-barrel intake manifold, and are designed for use on engines from 250 to 600 hp. They feature a built-in fuel pressure regulator, an ECU that finds the best tune and self-adjusts to it—and the ability to change air/fuel ratios and ignition timing on the fly.

    Each system has a hand-held controller with a touch screen for initial setup, throttle linkage that suits most transmissions, and is manufactured with OE engineering. FiTech Go EFI 4 600 hp self-tuning fuel injection systems leave the guesswork behind. Order the model with options best-suited for your application.

    Additional features:

    • Choice of three fuel inlet connections
    • Will work with CDI box, but not required to control timing
    • Adjustable fan control switch
    • Can be used with an engine-mounted returnless fuel command center
    • Uses easy-to-replace, GM-type sensors and Bosch 4.2 wideband oxygen sensors
    • Wet Flow swirl spray annual discharge obtains complete atomization
    • Voltage-controlling fuel pump control reduces power under low loads to lower temperatures
    • Systems with mounted ECUs offer spark control without the need for an external spark box or special distributor
    • Designed for applications making at least 6 in. of vacuum at idle

    Rebates

    FiTech 10% Off Select Parts Labor Day Sale 2026

    FiTech 10% Off Select Parts Labor Day Sale 2026FitechLaborDay10%OffSale2026

    FiTech Fuel Injection is pleased to announce our Labor Day Specials, running from September 1, 2026, through September 30, 2026. For a limited time, customers can save over $350 on Ultra Port EFI systems and EFI Master Kits, making it the perfect opportunity to upgrade to modern fuel injection with improved performance and drivability. 10% off applicable parts. Sale prices are applicable only to purchases made within the specified sale period, from September 1, 2026, to September 30, 2026. No rainchecks or exceptions will be provided. Sale price is valid through September 30. Regular MAP Pricing will be reinforced on October 1, 2026. This sale cannot be combined with any other offers, discounts, or promotions. Co-ops will be honored.

    CARB Warning

    For race/ off road use or for use on pre-1966 vehicles.

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

    FiTech 35501 Specifications

    KEY SPECS
    MFG. Part #35501
    BrandFiTech
    Injection StyleThrottle Body
    Max Horsepower Rating600
    ECM IncludedYes
    GENERAL
    Carburetor Flange Type4-Barrel Square Bore
    Fuel Injection System TypeSingle 4-Barrel Throttle Body (4150 Flange)
    User TunableYes
    Self TuningYes
    Injectors IncludedYes
    Intake Manifold IncludedNo
    Metering StyleSpeed density (Map-N) or speed throttle (Alpha-N)
    EGRNo
    Throttle Body IncludedYes
    Throttle Body MaterialCast Aluminum
    Throttle Body FinishPolished
    Venturi Quantity4
    Fuel Pump IncludedNo
    Calibration Module IncludedYes
    Wiring Harness IncludedYes
    Fuel Pressure Regulator IncludedYes
    Distributor IncludedNo
    MAP Sensor IncludedYes
    IAC Motor IncludedYes
    IAT Sensor IncludedYes
    TPS Sensor IncludedYes
    Use with Power AdderNo
    NotesIncludes force fuel mini part number 50006.
    GTIN Code812061034968
    Sold in QuantityKit
    Transmission Controller IncludedNo
    Multi-Port Fuel Rails IncludedNo
    Timing Control CompatibleYes

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