The MegaSquirt-2 Engine Management System (EMS) with V3.0 main board is a powerful, customizable solution for DIY tuners. This unassembled kit includes everything needed to build your own MS2 ECU — now upgraded with a MapDaddy4 onboard MAP/baro sensor for up to 44 PSI boost monitoring and real-time barometric correction.

Perfect for naturally aspirated, turbocharged, or supercharged engines, this system offers fuel and ignition control, closed-loop tuning capabilities, and a flexible foundation for future upgrades.

Included in the Kit:

• Genuine Bowling & Grippo V3.0 main PCB

• MegaSquirt-2 processor module

• MapDaddy4 4-Bar MAP sensor with barometric correction

• All components per the standard MS2 V3.0 Bill of Materials, including:

  • Basic components

  • PWM Flyback Damping Circuit

  • Hall/Coil(-) & VR ignition trigger components

  • Current limiting circuit

• Brushed silver aluminum enclosure (MS3-style for upgrade path)

• Pre-machined endplates

• Heatsink bar

• Heatsink compound

• Jumper wire

⚠️ Note: If you require direct coil control, BIP373 ignition drivers (Q16 and optional spark outputs) are sold separately. These are only needed when running dumb coils without an external ignition module.

MegaSquirt-2 Key Features:

• 24 MHz HCS12 processor

• Fuel control with 1 µs resolution

• 12×12 VE and spark tables

• 115200 baud serial communication

• Built-in rev limiter (fuel cut or spark retard)

• Closed-loop fuel control using narrowband or wideband O2

• Spark control for distributor-based or Ford EDIS systems

• Stepper IAC motor control (with jumper configuration)

• Ford PWM idle valve support

• Dual VE and AFR target tables

• Wideband O2 AFR target table with proportional EGO feedback

• Blended Alpha-N and speed density options

• Configurable MAP- or TPS-based open-loop accel enrichment

• CANBus networking

• Configurable barometric correction:

  • Initial MAP

  • Continuous baro via second MAP sensor

  • Or none

• 2 spare I/O lines for custom applications

Wiring & Connectivity:

• Compatible with high or low impedance injectors

• Female DB37 connector and shell included for harness connection

• Tuning software available as a free download

• Compatible with MegaTune and TunerStudio