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MegaSquirt Kits & Components

If you are looking for the lowest cost, rock-solid, fully tunable EFI and Ignition control solutions available, you’ve found it! MegaSquirt DIY EFI Un-Assembled Kits are incredibly well documented, clearly labeled kits where every component is labeled with it’s component number (to let you know where to install it on the PCB), as well as meticulous orientation and installation instructions. Additionally the documentation is very thorough, and walks you step-by-step through assembling your ECU, and stops along the way after major sections of the build to allow you to test the circuits you’ve built individually.

Tens of thousands of people around the world have successfully built their own MegaSquirt ECU and many of them successfully compete in a huge variety of motorsports. It’s not too hard for you to build your own ECU if you’ve got a bit of patience and are excited about the project and what you’ll learn along the way. Ever ‘painted by numbers’ before? It’s truly that simple to follow the directions and build your own ECU, by numbers.

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 49–64 of 145 results

  • GPIO Application Kit – EGT Input

    $35.99

    Single EGT input kit using AD595AQ amplifier chip. Intended for use on the GPIO board, but could be used anywhere you wish to take our EGT probes or other K-type thermocouples and convert their signal to a 0-5 volt output. This includes enough parts to po...

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  • GPIO Application Kit – MegaShift

    4 out of 5
    $34.99

    Use this application package to set up your GPIO (General Purpose Input/ Output) board (GPIO-K) for MegaShift.  Includes the 4L60E and 4L80E build guide items.  We've also included some extra components in case you're looking to change some features or ...

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  • CPU – MegaSquirt-II Daughterboard

    4.5714285714286 out of 5
    $136.00

    MegaSquirt-II Daughterboard For upgrading your Megasquirt-I ECU, or replacement of your damaged MegaSquirt-II daughterboard.  MS2 daughter cards are for use only with genuine Bowling & Grippo MegaSquirt mainboard PCBs. This is the latest version o...

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  • PKIT – MegaSquirt-I PCBv3.0 Partial Kit

    3 out of 5
    $132.00

    MegaSquirt-I PCBv3.0 Partial Kit PCBv3.0, MegaSquirt-I CPU and MPX4250 MAP Sensor for building a MegaSquirt-I PCB 3.0 ECU. Complete Bill of Materials (parts listing) and assembly instructions can be found HERE . Click HERE for complete MegaSquirt-...

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  • PKIT – MegaSquirt-I PCBv2.2 Partial Kit

    5 out of 5
    $115.00

    MegaSquirt-I PCBv2.2 Partial Kit PCBv2.2, MegaSquirt-I CPU and MPX4250 MAP Sensor for building a MegaSquirt-I PCB 2.2 ECU. Complete Bill of Materials (parts listing) and assembly instructions can be found HERE. Click HERE for complete MegaSquirt-I ...

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  • CPU – MegaSquirt-I CPU

    $999.00

    MegaSquirt-I CPU; Motorola 68HC908 microprocessor loaded with standard B&G MegaSquirt-I firmware version 3.0. This part is discontinued - sorry, we've sold out the whole stock. For use with any MegaSquirt PCB version 1, 2.2, 3.0, 3.57...

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  • PCB – MegaSquirt Relay Board PCB Only

    $30.00

    MegaSquirt Relay Board PCB PCB Only for building a MegaSquirt Relay and Power Board. Complete Bill of Materials (parts listing) and schematics can be found HERE. Click HERE for a fully assembled relay board.

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  • TransStim PCB

    5 out of 5
    $30.00

    The TransStim simulates a 4L60E transmission, and several others. This is the bare PCB to make one TransStim. Use it to test your MegaShift or other transmission controller. The TranStim™ will help you to: Validate and troubleshoot a newly built...

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  • DB15 Solder Cup Connector

    $3.00

    DB15 female solder cup connector, as included in our V3.57 setups, DIYPNP, and VVTuner. 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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  • Jumper 10-Pack

    5 out of 5
    $7.49

    10-pack of wire jumpers in 5 colors. These fit 0.1" headers and are used on the JimStim to make connections for testing additional circuitry.   There are several other uses for them too.

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  • DB15 Metalized Plastic Backshell

    $3.00

    Metalized plastic backshell for the DB15 spare I/O connector, as used on our DIYPNP, VVTuner, and V3.57 boards.

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  • Y Vacuum Fitting

    $2.00

    1/8" vacuum Y-fitting, as included in the MSPNP and Mustang plug and play packages. This is made of clear polycarbonate. Maximum pressure 125 psi. This plastic is tough enough to take 275 degree F engine temps, and won't crack even if exposed to Siberian ...

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  • Replacement Relay Board Relay

    $7.99

    Single replacement Tyco relay for the relay board. This is a pretty standard relay (Mini-ISO) and may fit many OEM fuse boxes as well. SPST contacts, rated for 12 volts and 30 amps. Does not have a mounting tab, so trying to use it with spade terminals is...

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  • MegaSquirt GPIO Black Anodized Case

    $48.00

    GPIO board case. This one has an AMPSEAL cutout on one end, and the other end blank. You may drill a hole if using the stereo jack for serial communication, or use the AMPSEAL for that. Note that these cases are a bit of a tight fit - we recommend solderi...

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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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  • Bulkhead Vacuum Fitting

    $2.49

    Bulkhead fittings, just like those included in our V2.2 kits and MapDaddy. It's made from black nylon, fits 1/8" vacuum line on both sides, and measures about 1 1/4" long. Use to replace broken fittings, or if you're running your MAP sensor or boost gauge...

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