Product Summary

Universal Fit, Throttle Body Injection Style, Black

    Rebates Available

    Key Specs

    MFG. Part #93021
    Injection StyleThrottle Body
    Fuel Injection System TypeSingle 4-Barrel Throttle Body (4150 Flange)
    Max Horsepower Rating550
    ECM IncludedYes

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    FiTech 93021 Details

    The retrofit fuel injection revolution has begun! FiTech is the leading name in EFI conversions for good reason, bringing not only economy to the market but simplicity through design. The switch to fuel injection has never been easier. FiTech’s technology is designed and developed using OEM level engineering and components. All throttle bodies have built-in computers and sensors, reducing the amount of wiring to route in your vehicle. You can run the system on only 4 wires and two sensors! The sensors are OEM style for proven reliability and easy replacement.

    Go EFI Fuel Injection System, 650HP

    Fitech Fuel Injection introduces the all new Go EFI Classic in the classic carburetor gold finish. Fitech EFI is now reverting back to the old school classic look while maintaining its innovative award winning patented design. This revolutionary fuel injection system allows you to maintain the classic carburetor look while eliminating cold start issues, hesitation, vapor lock and flooding. This innovative classic design hides the injectors and has an externally mounted ECU so it can be mounted wherever you want to ensure a true carburetor look is maintained. The Go EFI Classic is a self-tuning fuel injection system rated for up to 650hp. The more you drive the more it adapts to your personal style. So it is perfect for your everyday driver, your weekend Street Machine, or your Bracket Racer.

    • Dual Pattern bolt on carburetor replacement, designed to fit 4150 Flange & Spread Bore manifolds
    • Externally mounted ECU to maintain that classic carburetor look
    • (4) Injectors support up to 650hp
    • Integrated ignition timing control & coil driver
    • High resolution full color touchscreen for setup, tuning, and gauge displays
    • The included Genuine Bosch LSU 4.2 Wideband Oxygen Sensor provides real time Fuel Map Learning
    • Included clamp-on oxygen sensor kit ensures a leak free oxygen sensor installation, with stainless steel T-Bolt clamps and a stainless steel (Weldable) oxygen sensor flange
    • High-flow aluminum throttle body with four 45mm diameter throttle bores to increase the air flow for additional horsepower gains and large CM engines
    • All sensors excluding the O2 and coolant sensor are integrated directly into the throttle body
    • Works with original carb-type distributor, factory-style throttle linkage, and most four barrel intake manifolds

    FiTech Go-Spark CD Ignition

    FiTech EFI is excited to extend their ignition offerings with the new Go-Spark CD Ignition! The all-new Capacitive Discharge Ignition will deliver high powered sparks from idle to top rpm to improve the combustion event and power output of your engine.

    The Go-Spark CDI was designed for both EFI equipped or carbureted engines and features a microprocessor to manage the spark delivery. The ignition, which is assembled in the USA, produces a series of multiple sparks below 2,500 rpm to improve starting, idle quality and throttle response. At higher rpm, the CD technology continues to deliver full energy sparks through racing rpm to ensure complete combustion of the fuel mixture. 

    The Go-Spark CDI is designed for 4, 6, and 8-cylinder engines equipped with a distributor. It accepts the trigger signal from an HEI, amplifier, points, or 2-wire non-magnetic pickup distributors. The tach output signal, which is also used to trigger a FiTech EFI system, is a 12-volt square wave signal that is divorced from other circuits to provide a clean, perfect signal.

    Not legal for use on pollution controlled vehicles. This system is designed to be installed into vehicles that do not require emission controls.

    Not legal for use on pollution controlled vehicles. This system is designed to be installed into vehicles that do not require emission controls.



    FiTech Fuel Injection Instant Rebate 2023

    FiTech Fuel Injection Instant Rebate 2023

    Get an instant rebate of up to $275. No limit on quantity purchased! Cannot be combined with any other coupons or discounts. Purchases must be made between October 10, 2023 and November 30, 2023. Complete list with discounts

    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 93021 Specifications

    MFG. Part #93021
    Injection StyleThrottle Body
    Fuel Injection System TypeSingle 4-Barrel Throttle Body (4150 Flange)
    Max Horsepower Rating550
    ECM IncludedYes
    Carburetor Flange Type4-Barrel Square Bore
    User TunableYes
    Self TuningYes
    Injectors IncludedYes
    Intake Manifold IncludedNo
    Metering StyleSpeed density (Map-N) or speed throttle (Alpha-N)
    Throttle Body IncludedYes
    Throttle Body MaterialAluminum
    Throttle Body FinishBlack
    Venturi Quantity4
    Fuel Pump IncludedNo
    Calibration Module IncludedYes
    Wiring Harness IncludedYes
    Fuel Pressure Regulator IncludedNo
    Distributor IncludedNo
    MAP Sensor IncludedYes
    IAC Motor IncludedYes
    IAT Sensor IncludedYes
    TPS Sensor IncludedYes
    Use with Power AdderNo
    NotesKit includes FiTech Go-Spark CD ignition box.
    GTIN Code812061033473
    Sold in QuantityKit
    Transmission Controller IncludedNo
    Multi-Port Fuel Rails IncludedNo
    Timing Control CompatibleNo