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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.)

Showing 1–10 of 18 results

  • MegaSquirt-III EMS System with MS3X Expansion V3.57 – Assembled Unit

    $691.95

    Complete, ready to run MegaSquirt-III ECU with the MS3X expansion board. 2.5 bar MAP sensor is standard equipment.The MS3 daughter card on its own will give you all these features and more:VE and ignition tables are both 16 x 16 with full interpo...

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  • MegaSquirt-III EMS System – V3.57 – Assembled Unit with Black Case

    $586.95

    MegaSquirt-III Engine Management System w/PCB3.57 - The MegaSquirt-III is a drop in daughter card that greatly expands the MegaSquirt's functionality. This is the basic, batch fire version, but can be expanded to add sequential injection and 8 channel ign...

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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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  • 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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  • JimStim 1.5 MegaSquirt Stimulator with Wheel Simulator – Assembled

    $99.75

    DIYAutoTune Part# JimStim-CThis is a newer version of the stimulator, designed by James Murray (jsmcortina on the forums) that expands on the original stim's features. The main improvement comes with the addition of a microcontroller which allows the ...

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  • JimStimX Expansion Board – Assembled

    $68.25

    The regular JimStim can test the main board on your MS3. But what if you'd like to see the inputs and outputs on the MS3X expansion card in action, too? Now it's easy - just add a JimStimX! Use the three pull-off jumpers on the JimStim to connect the 5 vo...

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  • USB Tuning Cable for MegaSquirt-III

    $7.30

    Use this cable to plug your MegaSquirt-III, MS3-Pro, or MSPNP Pro (JZ9298 only) directly into your USB port. No adapters required!

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