Classic MegaSquirt 3 PCB3.0 UnAssembled Kit

Build your own fully featured MegaSquirt-3 Engine Management System with this comprehensive unassembled kit. The MS330-K includes all essential components needed to assemble a complete MS3 ECU on a PCB Version 3.0 board — perfect for DIY enthusiasts and advanced tuners.

What’s Included:

• Genuine B&G V3.0 PCB board

• MS3 Daughter Card

• All components per standard V3.0 Bill of Materials (BOM), including:

  • Basic components

  • 2.5 Bar MAP Sensor

  • PWM Flyback Damping Circuit components

  • Hall Sensor/Coil(-) and VR Sensor Ignition Trigger components

  • Current Limiting Circuit components

• Machined aluminum enclosure

• Pre-machined endplates

• Heatsink bar

• Tube of heatsink compound

• Jumper wire for custom connections

All you need to provide are your tools, solder, and assembly time!

Expandability & Compatibility:

• The MS3X Expander Board (sold separately) unlocks full functionality:

  • 8-cylinder sequential injection

  • 8 ignition outputs for coil-on-plug (COP) setups

  • Nitrous control, 2-step, launch control, table switching, and more

• Add a tuning cable if you don’t already have one

• BIP373 Coil Driver (sold separately) is only needed if you are controlling dumb coils directly without an ignition module

  • Not needed for smart coils or those with external modules

Core MS3 Features (via Daughter Card):

• 16 × 16 VE and ignition tables

• High resolution tuning: 0.1% fuel and 0.1° ignition step sizes

• Built-in USB port

• Onboard SD card slot for data logging (SD card not included)

• GM stepper IAC support

• Closed-loop idle and mixture control

• CANBus communication for expansion (GPIO board, I/O Extender, etc.)

• Staged injection

• Native support for multiple OEM trigger patterns

Expandable Features with MS3X:

• 8-channel sequential fuel and ignition control

• Per-cylinder fuel and spark trim

• 2–3 channel PWM idle control

• 2-stage nitrous

• Multi-fuel table switching

• Launch control and more