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MegaSquirt 3

MS3 – Fully assembled and tested, ready to wire in and go!

The MegaSquirt 3 (MS3) is ready to support a wide variety of engines out of the box, with the ability to control anything with one to eight cylinders with sequential fuel injection and sequential ‘coil on plug’ ignition, a V12 with semi-sequential fuel and wasted spark ignition, or a four rotor Wankel with separate leading and trailing ignition outputs. Over 50 different ignition modes are supported, from mainstream applications like the GM LS1, Ford Zetec, Bosch Motronic, and Chrysler Gen III Hemis to unusual modes like Renix Jeeps and the Suzuki Swift GTI. The software includes many ‘race’ type features, two stages of progressive nitrous, water injection, closed loop boost control etc. Vehicle speed sensing, logging of EGT (with external hardware.)

EPA, CARB & Emissions Disclaimer- All ECU's are for race purposes only. It's your responsibility to remain in compliance with all federal, state, provincial, or other laws that apply to you.

Showing all 12 results

  • 8′ MegaSquirt Wiring Harness (MS1/MS2/MS3 Ready)

    5 out of 5
    $99.99

    MegaSquirt Wiring Harness - 8 Feet Long We've completely redesigned our wire harness to help you get your fuel injection installation right the first time with several new features to help make your installation as easy and reliable as possible: ...

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  • 8′ MegaSquirt Wiring Harness for MS3X

    5 out of 5
    $114.99

    MegaSquirt MS3X Wiring Harness - 8 feet 8' of TXL High temp automotive grade wire. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here! All wiring is pre-crimped (NOT solder cupped!) to the DB37 Heavy d...

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  • MegaSquirt 3 EMS System V3.57

    $659.99

    Important Note:  Due to supply chain challenges and the lack of ability to have parts anodized at this time, we are transitioning to brushed silver enclosures.  We appreciate your understanding.   MegaSquirt 3 Engine Management System w/PCB3.57 - The...

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  • MegaSquirt 3 ECU with MS3X Expansion

    5 out of 5
    $699.99

    Important Note:  Due to supply chain challenges and the lack of ability to have parts anodized at this time, we are transitioning to brushed silver enclosures.  We appreciate your understanding.   The MegaSquirt 3 with MS3X expansion arrives equipped...

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  • USB Tuning Cable for MegaSquirt-III/ MS3Pro 1st Gen

    $8.50

    Use this cable to plug your MegaSquirt-III, MS3-Pro 1st Gen, or MS3Pro Plug & Play for 2JZ Supra/SC300 directly into your USB port. No adapters required!

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  • MegaSquirt 3X Wiring Bundle – 8′ long

    5 out of 5
    $74.99

    MegaSquirt MS3X Wiring Bundle - Length = 8' 8' of TXL High temp automotive grade wire. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here! Use with MS3X Expansion board or other sequential device Just ...

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  • MegaSquirt Tuning Cable (DB9 Straight Thru)

    5 out of 5
    $6.00

    DB9 6' Male/Female Straight thru cable for tuning and testing your MegaSquirt ECU.

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  • MegaSquirt Relay Board – Assembled Unit

    5 out of 5
    $264.99

    MegaSquirt Relay Board - Assembled Unit - Part# MSRelay-C Though the Relay/Power Board is not required, it is a convenience and can reduce the chance of miswiring during the installation. The relay board provides a central place for all of the required...

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  • MegaSquirt Wiring Bundle – 8′ Long

    4.2727272727273 out of 5
    $62.99

    MegaSquirt Wiring Bundle 8' TXL wire, color coded with labeling printed on the wire every 3 inches -- no paper tags here! IAC and Ignition wires are included for MS-I / MS-2 use (or MS-3 Primary Harness use) Shielded Ignition input wire Grea...

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  • MegaSquirt MS3X Wiring Bundle – 23″

    5 out of 5
    $29.99

    MegaSquirt MS3X Wiring Bundle - Length = 23" ~23" of TXL High temp automotive grade wire. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here! Use with MS3X Expansion board or other sequential device J...

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  • DB15 Pigtail Harness

    5 out of 5
    $23.99

    DB15 pigtail harness. Used for optional outputs on the expansion connector on V3.57 boards and for the V1.2 version of the MSPNP Gen 2 (the version with the red main board).

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  • DB37 Solder Cup Connector for MS3X

    $6.50

    To make sure you can't accidentally switch the upper and lower harnesses, the MS3X harness uses a male DB37 connector instead of a female one.  We've packaged a DB37 male solder cup connector and a metalized plastic backshell for your MS3X builds. See t...

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