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EFI Systems

EFI Performance Tuning 

EFI performance tuning is a game-changer for anyone looking to squeeze every last ounce of efficiency and horsepower from their engine. Scram Speed offers a wide variety of tools for dialing in the perfect tune. Whether you’re just starting out or chasing tenths at the track, our EFI performance tuning products make setup and adjustment straightforward.

Looking for simplicity? The self-tuning Holley EFI system is a favorite among our clients for its plug-and-play ease. It’s ideal for builders who want results without constant fiddling. Our team is always on hand to help you select the right components to get your setup running flawlessly. Reach out to Scram Speed today for expert support and to take your EFI performance tuning to the next level.

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  • New
    Innovate Motorsports Innovate 3795 DB-GAUGE KIT BLUE W/ LC-2 & O2 SENSOR, digital automotive gauge display showing air/fuel ratio with blue backlight.

    Innovate Motorsports

    Innovate 3795 DB-GAUGE KIT BLUE W/ LC-2 & O2 SENSOR

    Key Features 100 pct. Digital Wideband Air/Fuel Ratio Technology Blackout Appearance When Unpowered Comes Complete w/Patented Aware-Winning LC-2 Wideband Controller Easy Set Up and Wiring; Instructions Included Gauge Itself Is Analog Only; No...

    $299.00
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  • New
    Innovate Motorsports 3796 DB-GAUGE KIT RED W/ LC-2 & O2 SENSOR, digital automotive gauge display showing air/fuel ratio of 14.8 with brand logo.

    Innovate Motorsports

    Innovate 3796 DB-GAUGE KIT RED W/ LC-2 & O2 SENSOR

    Key Features 100 pct. Digital Wideband Air/Fuel Ratio Technology Blackout Appearance When Unpowered Comes Complete w/Patented Aware-Winning LC-2 Wideband Controller Easy Set Up and Wiring; Instructions Included Gauge Itself Is Analog Only; No...

    $299.00
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  • Holley Performance Parts – EFI, Intakes, & More Holley 558-462 Terminator X Input/Output Harness, automotive wiring harness with multiple colorful wires and connector.

    Holley Performance Parts – EFI, Intakes, & More

    Holley 558-462 Terminator X Input/Output Harness

    This harness allows you to access all of the I/O built into the Terminator X or X MAX ECU - some kits ship with a 3 wire I/O harness. This harness has all 8 pins populated, 4 Inputs and 4 Outputs. Features: 36" Flying Leads Pre-terminated at ECU...

    $40.48
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  • Holley Performance Parts – EFI, Intakes, & More Holley 565-345 HyperSpark Small Cap - Chrysler 383, 400, electronic ignition distributor with small cap and wiring harness.

    Holley Performance Parts – EFI, Intakes, & More

    Holley 565-345 HyperSpark Small Cap - Chrysler 383, 400

    HyperSpark Ready to Run adds plug and play ignition timing control to any Holley EFI system. This line of distributors comes with a built-in ignition coil driver, removing the need of mounting an ignition box or external coil driver. The design includes...

    $310.11
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  • Holley Performance Parts – EFI, Intakes, & More Holley 565-343 Hyperspark Small Cap BBF 351-C,429,460 distributor, with black ignition cap, wiring harness, and mechanical drive shaft

    Holley Performance Parts – EFI, Intakes, & More

    Holley 565-343 Hyperspark Small Cap BBF 351-C,429,460

    HyperSpark Ready to Run adds plug and play ignition timing control to any Holley EFI system. This line of distributors comes with a built-in ignition coil driver, removing the need of mounting an ignition box or external coil driver. The design includes...

    $562.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More Holley 565-344 Hyperspark Small Cap Chrysler 318, 360 ignition distributor with black top and electronic wiring

    Holley Performance Parts – EFI, Intakes, & More

    Holley 565-344 Hyperspark Small Cap Chrysler 318, 360

    HyperSpark Ready to Run adds plug and play ignition timing control to any Holley EFI system. This line of distributors comes with a built-in ignition coil driver, removing the need of mounting an ignition box or external coil driver. The design includes...

    $562.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More Holley 565-346 HyperSpark Small Cap - Chrysler 426, 440, image of a small black ignition coil with wiring for Chrysler engines.

    Holley Performance Parts – EFI, Intakes, & More

    Holley 565-346 HyperSpark Small Cap - Chrysler 426, 440

    HyperSpark Ready to Run adds plug and play ignition timing control to any Holley EFI system. This line of distributors comes with a built-in ignition coil driver, removing the need of mounting an ignition box or external coil driver. The design includes...

    $562.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More Holley 565-341 Hyperspark Small Cap - SBF- 260,289,302, automotive ignition distributor with small cap and electronic ignition components.

    Holley Performance Parts – EFI, Intakes, & More

    Holley 565-341 Hyperspark Small Cap - SBF- 260,289,302

    HyperSpark Ready to Run adds plug and play ignition timing control to any Holley EFI system. This line of distributors comes with a built-in ignition coil driver, removing the need of mounting an ignition box or external coil driver. The design includes...

    $562.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More Holley 565-342 Hyperspark Small Cap SBF 351W, automotive ignition distributor with black ignition module and silver body, for small block Ford 351W engines.

    Holley Performance Parts – EFI, Intakes, & More

    Holley 565-342 Hyperspark Small Cap SBF 351W

    HyperSpark Ready to Run adds plug and play ignition timing control to any Holley EFI system. This line of distributors comes with a built-in ignition coil driver, removing the need of mounting an ignition box or external coil driver. The design includes...

    $562.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More Holley 565-341S Hyperspark Small Cap - SBF- 260,289,302, close-up of ignition distributor with black cap and wiring, automotive performance part for small block Ford engines.

    Holley Performance Parts – EFI, Intakes, & More

    Holley 565-341S Hyperspark Small Cap - SBF- 260,289,302

    HyperSpark Ready to Run adds plug and play ignition timing control to any Holley EFI system. This line of distributors comes with a built-in ignition coil driver, removing the need of mounting an ignition box or external coil driver. The design includes...

    $499.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More Holley 565-340 HyperSpark Small Cap - Chevrolet V8 SB, BB ignition distributor with black cap and metal shaft.

    Holley Performance Parts – EFI, Intakes, & More

    Holley 565-340 HyperSpark Small Cap - Chevrolet V8 SB, BB

    HyperSpark Ready to Run adds plug and play ignition timing control to any Holley EFI system. This line of distributors comes with a built-in ignition coil driver, removing the need of mounting an ignition box or external coil driver. The design includes...

    $499.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More Holley 554-153 Terminator X Max Service ECU, black electronic control unit for vehicle engine management.

    Holley Performance Parts – EFI, Intakes, & More

    Holley 554-153 Terminator X Max Service ECU

    The Terminator X Max ECU features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, electronic transmission control, drive-by-wire throttle body control, and 4 programmable inputs and outputs. The inputs and outputs...

    $1,229.95
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  • Holley EFI 550-944 Terminator X Max - Ford MPFI Kit, automotive engine management system components including wiring harnesses, control units, sensors, and connectors.

    Holley EFI

    Holley EFI 550-944 Terminator X Max - Ford MPFI Kit

    Take control of your conventional Ford engine with Terminator X! Don't settle for a factory ECU with a cumbersome tuning interface or pre-programmed tuning chip when you can have complete control of your engine, self-learning fuel strategies and the...

    MSRP: $2,137.95
    $1,899.95
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