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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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  • Holley Performance Parts – EFI, Intakes, & More Holley HP EFI Plug and Play ECU and Harness kit for GM LS2/LS3/LS7, includes NTK O2 sensor, electronic wiring harness, ECU unit, and installation accessories.

    Holley Performance Parts – EFI, Intakes, & More

    Holley HP EFI Plug and Play ECU and Harness kit for GM LS2/LS3/LS7 -NTK O2 sensor

    Looking for a alternative for your stock or built late model factory FORD EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as...

    MSRP: $3,341.95
    $3,099.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More HP ECU AND HARNESS, LS2/3/7, BOSCH INJ, automotive wiring and electronic engine control units for LS engines.

    Holley Performance Parts – EFI, Intakes, & More

    HP ECU AND HARNESS, LS2/3/7, BOSCH INJ

    Looking for a alternative for your stock or built late model factory FORD EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as...

    MSRP: $3,059.95
    $2,849.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More Holley EFI HP ECU AND HARNESS, Universal Ford V8 Multi-Point -NTK 02 Sensor, image shows an automotive engine control unit with wiring harnesses, sensors, and accessories for vehicle tuning and engine management.

    Holley Performance Parts – EFI, Intakes, & More

    Holley EFI HP ECU AND HARNESS, Universal Ford V8 Multi-Point -NTK 02 Sensor

    Looking for a alternative for your stock or built late model factory FORD EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as...

    MSRP: $3,228.95
    $2,999.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More Holley EFI HP ECU AND HARNESS, Universal Ford V8 Multi-Point, automotive wiring harness and electronic control unit with connectors and accessories.

    Holley Performance Parts – EFI, Intakes, & More

    Holley EFI HP ECU AND HARNESS, Universal Ford V8 Multi-Point

    Looking for a alternative for your stock or built late model factory FORD EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as...

    MSRP: $2,936.95
    $2,749.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More Holley EFI HP ECU and Unterminated Harness - NTK O2 Sensor, automotive wiring harness and components for engine control and tuning.

    Holley Performance Parts – EFI, Intakes, & More

    Holley EFI HP ECU and Unterminated Harness - NTK O2 Sensor

    Looking for a alternative for your stock or built late model factory FORD EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as...

    MSRP: $3,228.95
    $2,999.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More Holley EFI HP ECU AND HARNESS KIT - Universal Multi Point Fuel Injection, showing various wires, connectors, ECU unit, sensors, and installation hardware for vehicle engine management.

    Holley Performance Parts – EFI, Intakes, & More

    Holley EFI HP ECU AND HARNESS KIT - Universal Multi Point Fuel Injection

    Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI...

    MSRP: $2,936.95
    $2,749.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More Holley HP EFI Plug and Play ECU and Harness kit for GM LS2/3/7 NTK Sensor, automotive wiring harness and electronic control unit with various connectors and wires.

    Holley Performance Parts – EFI, Intakes, & More

    Holley HP EFI Plug and Play ECU and Harness kit for GM LS2/3/7 NTK Sensor

    Looking for a plug and play kit for your GM LS engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more. Got a stock LS engine? Simply download a base map and you're on your way. Got a turbocharged, nitrous...

    MSRP: $3,341.95
    $3,099.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More HP EFI Plug and Play ECU AND HARNESS, LS1/LS6, NTK 02 sensor, automotive wiring harness and electronic controller for engine management systems.

    Holley Performance Parts – EFI, Intakes, & More

    HP EFI Plug and Play ECU AND HARNESS, LS1/LS6, NTK 02 sensor

    Looking for a plug and play kit for your GM LS engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more! Got a stock LS engine? Simply download a base map and you're on your way. Got a turbocharged, nitrous...

    MSRP: $3,341.95
    $3,099.95
    Add to Cart The item has been added
  • Holley Performance Parts – EFI, Intakes, & More HP EFI Plug and Play ECU AND HARNESS, LS1/LS6, image showing the ECU, wiring harness, and installation components for automotive performance enhancement.

    Holley Performance Parts – EFI, Intakes, & More

    HP EFI Plug and Play ECU AND HARNESS, LS1/LS6,

    Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI...

    MSRP: $3,059.95
    $2,849.95
    Add to Cart The item has been added
  • AEM Digital UEGO Wideband Air/Fuel Gauge, digital car gauge with a black face, red LED display, and green indicator light, used for measuring air/fuel ratio in vehicles.

    AEM

    AEM Digital UEGO Wideband Air/Fuel Gauge

    We recommend the AEM Wideband for use with our tuning products. You can't tune for WOT safely or effectively without a wideband.   Nothing 'plugs in' to your tuning software easier or more economically than these units from AEM.   The color...

    $199.99
    Add to Cart The item has been added
  • Haltech HT-067010 iC-7 Digital Dash Kit 7 inch, car dashboard display with digital gauges and colorful LED strip.

    Haltech

    Haltech HT-067010 iC-7 Digital Dash Kit 7 inch

    Scram Speed is now a Haltech dealer!! DASH OVERVIEW With a crisp, clear and full colour display, the all new Haltech iC-7 Display Dash lets you see things in a brand new way. Designed and manufactured in Australia with motoring enthusiasts in mind, the...

    $1,195.00
  • Haltech HT-196001 Nexus Ti4L Transmission Interface Kit, GM 4L Series, with wiring harness, connectors, and installation accessories

    Haltech

    Haltech HT-196001 Nexus Ti4L Transmission Interface Kit, GM 4L Series

    Scram Speed is now a Haltech dealer!! The Ti4L unit allows easy control for GM's popular 4L series of automatic transmissions. Designed as an expansion module for the NEXUS ECU and VCU range the Ti4L will be programmed via our NSP software, or Rebel LS...

    $450.00
  • Haltech HT-186504 Rebel LS Cable Throttle+IAC Sub-harness, automotive throttle and Idle Air Control sub-harness with connectors and wiring for engine control.

    Haltech

    Haltech HT-186504 Rebel LS Cable Throttle+IAC Sub-harness

    Scram Speed is now a Haltech dealer!! This adapter is used to connect the throttle connector on the Nexus Rebel LS main terminated harness to a cable-operated GM LS throttle body with a TPS and an IAC valve.

    $28.00
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