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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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  • Scram Speed SNS 143 SNIPER IAC, automotive part in black with mounting flange and rubber O-ring.

    Scram Speed

    SNS 143 SNIPER IAC

    Sniper Idle Air Control.  Compare to Holley 543-105

    $54.95
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    Holley Performance Parts – EFI, Intakes, & More Holley Sniper 2 Transmission Control Kit, automotive wiring harness with connector for vehicle transmission control system.

    Holley Performance Parts – EFI, Intakes, & More

    Holley Sniper 2 Transmission Control Kit

    The Sniper Transmission Controller (STC) is designed for common GM and Ford electronic 4-speed transmissions. Three part numbers cover a complete range of applications - all Sniper EFI systems, Sniper 2 EFI specific (M8 CAN connection), or a full...

    MSRP: $691.95
    $552.95
    $614.95
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    Holley EFI Holley 550-1011 Terminator X Max Stealth with trans control, a high-performance electronic fuel injection system with a digital control box, touchscreen display module, and motorized throttle body.

    Holley EFI

    Holley 550-1011 Terminator X Max Stealth with trans conrtrl

    The Terminator X Stealth 4150 EFI system from Holley features 4, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. The Terminator X ECU is capable of fuel map self-learning and...

    MSRP: $2,699.95
    $2,158.95
    $2,399.95
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    Holley 550-510-3AX Sniper 2 Upgrade Kit - Polished, automotive fuel system upgrade with polished aluminum throttle body, wiring harness, gasket, and electronic display

    Holley 550-510-3AX Sniper 2 Upgrade Kit - Polished

    Want to make the switch from the original Sniper EFI to Sniper 2 and don't want to rewire your system? The new Sniper 2 upgrade kits are designed to do exactly that! Included with each Sniper 2 Plug and Play upgrade system is an adapter solution that...

    MSRP: $1,349.95
    $1,078.95
    $1,199.95
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    Holley EFI Holley 550-917 Terminator X MAX Engine Management System, black control module with display screen and wiring harness.

    Holley EFI

    Holley 550-917 Terminator X MAX Engine Management System

    Take control of your LS engine with Terminator X Max. Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley...

    MSRP: $2,137.95
    $1,708.95
    $1,899.95
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    Holley Performance Parts – EFI, Intakes, & More Holley EFI 554-102 100 PSI PRESSURE TRANSDUCER, pressure sensor with wiring harness and connector for automotive fuel systems.

    Holley Performance Parts – EFI, Intakes, & More

    Holley EFI 554-102 100 PSI PRESSURE TRANSDUCER

    Plug and play for Holley Avenger, Terminator, HP, and Dominator ECU fuel and oil pressure inputs. Features: Plug and play for both fuel and oil pressure inputs with Holley EFI systems (Terminator systems monitor fuel pressure only) Stainless steel...

    MSRP: $172.95
    $137.65
    $152.95
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  • Holley 565-32 HyperSpark Installation Tool - Clockwise

    Holley Performance Parts – EFI, Intakes, & More

    Holley 565-32 HyperSpark Installation Tool - Clockwise

    HyperSpark Distributor Installation Tool, designed to work with the 565-300 series HyperSpark distributors with a clockwise rotation - such as SBC/BBC, Small Block Chrysler, and 258ci Jeep applications. Features: Service Installation Cap for HyperSpark...

    MSRP: $25.79
    $22.92
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  • Holley Performance Parts EFI, Intakes, & More Holley 565-30 HyperSpark Distributor Cap for V-8, black distributor cap with metal contact posts for V-8 engine ignition system.

    Holley Performance Parts – EFI, Intakes, & More

    Holley 565-30 HyperSpark Distributor Cap for V-8

    HyperSpark Distributor V-8 Service Cap, for 565-300 series HyperSpark distributors. Features: Service Cap for HyperSpark Distributors

    MSRP: $67.95
    $60.05
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    Holley Performance Parts – EFI, Intakes, & More Holley 565-304 Sniper EFI HyperSpark Distributor for Chrysler 318 / 360, with electrical connections, mounting hardware, and distributor cap in the image.

    Holley Performance Parts – EFI, Intakes, & More

    Holley 565-304 Sniper EFI HyperSpark Distributor - Chrysler 318 / 360

    Do you need to upgrade your ignition system due to a recent Sniper EFI installation, but have no idea which option is best? Introducing HyperSpark Ignition, from Sniper EFI. The complete system consists of a CD Ignition Box, Billet distributor with Hall...

    MSRP: $518.95
    $413.95
    $460.95
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    Holley Performance Parts – EFI, Intakes, & More Holley 565-301 Sniper EFI HyperSpark Distributor - Ford Small Block, black and silver distributor with wiring and detailed components.

    Holley Performance Parts – EFI, Intakes, & More

    Holley 565-301 Sniper EFI HyperSpark Distributor - Ford Small Block

    Do you need to upgrade your ignition system due to a recent Sniper EFI installation, but have no idea which option is best? Introducing HyperSpark Ignition, from Sniper EFI. The complete system consists of a CD Ignition Box, Billet distributor with Hall...

    MSRP: $518.95
    $413.95
    $460.95
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