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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.

Showing 11–20 of 182 results

  • MegaSquirt-III Daughterboard Kit

    $229.95

    Upgrading your MS1 or MS2 to the latest MS3 has never been easier with this processor replacement! We've packaged the MS3 daughter board with 2 of the 40 pin sockets, so it will match up with our cases (required for upgrade) which have cutouts for the SD ...

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  • MegaSquirt-III MS3X Expansion Card

    $110.25

    Put this small circuit board in your MegaSquirt-III to unlock its full potential! This board installs in the MS3 case with no soldering; just connect it with the included ribbon cables. Install the MS3X board to add this whole list of inputs and outputs t...

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  • 8′ MegaSquirt Wiring Harness for MS3X

    $85.95

    MegaSquirt MS3X Wiring Harness - 8 feet8' 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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  • MS230-K Kit with MapDaddy4 Upgrade

    $350.70

    MegaSquirt-II Engine Management System with 3.0 Main Board - UnAssembled Kit; Part # MS230-K_m4The MS230-K kit includes everything you will need to build your MegaSquirt-2. The genuine B&G partial kit with PCB3.0, the Bill Of Materials, the case,...

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  • MegaSquirt-II Programmable EFI System PCB3.0 – Kit

    $292.95

    MegaSquirt-II Engine Management System with 3.0 main board - Unassembled Kit with Black Case; Part # MS230-KThe MS230-K kit includes everything you will need to build your MegaSquirt-2. The genuine B&G partial kit with PCB3.0, the Bill Of Materia...

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  • 24″ MegaSquirt Pigtail MS3X Harness

    $57.75

    MegaSquirt MS3X Wiring Pigtail - Length = 24"24" 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 Heav...

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

    $82.95

    MegaSquirt Wiring Harness - 8 Feet LongWe'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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  • 24″ MegaSquirt Pigtail Harness

    $52.50

    MegaSquirt Wiring Harness - 24 inches longCompletely redesigned version adds more features to help make your installation as easy and reliable as possible. We've now brought the improvements from the long harness over to the pigtail harness. This min...

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  • MegaSquirt Relay Cable

    $89.25

    High Quality 4' Relay Board cable for connecting your MegaSquirt ECU to your Relay Board.Works with MS1, MS2, or MS3, all standard main boards (includes not just the IAC and ignition pins - it also has the spare pins on 3 through 6). It has a shielded...

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  • DIYBOB Breakout Adapter – Nippon Denso 76 pin

    $93.45

    The DIYBOB is an exclusive breakout board from DIYAutoTune.com that allows you to easily build professional adapter harnesses connecting the engine management of your choice to a wide variety of cars.  The DIYBOB includes an OEM style connector, circuit ...

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