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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 17–23 of 23 results

  • 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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  • MS Harness Extra Wire Kit

    $8.99

    This 8' wire with pre-crimped terminal can be poked into our MegaSquirt DB37 harness if an extra wire is needed for additional I/O (MSHarness12, available separately).  Made of the same TXL rated automotive grade wiring as the rest of our MegaSquirt wiri...

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  • DB37 Solder Cup Connector for MS3X

    $7.99

    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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  • Metal DB37 Cover with Hardware & Gaskets

    4 out of 5
    $10.50

    Metal DB37 Cover with Hardware and Gaskets This Metal DB37 cover is perfect for building up your own Megasquirt wiring harness or relay cable connector.

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  • DB37 Metalized Plastic Backshell

    $2.99

    This is the 937GME-ND metalized plastic backshell cover included in our basic Megasquirt kits. It's not the same as the massive AMP metal cover used on our harnesses (that's sold on its own under wiring components), but it is cheap and effective if you're...

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  • DB37 Solder Cup Connector

    $3.00

    DB37 female solder cup connector, as included in our Megasquirt and relay board kits. Use this if you're making a new harness and prefer a soldered connection. This is the connector only; the backshell is sold separately.

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  • MegaSquirt Tuning Cable (DB9 Straight Thru)

    5 out of 5
    $6.99

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

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