Classic MegaSquirt 2 ECU V3.57

The MegaSquirt 2 ECU with v3.57 surface-mount PCB is a fully assembled, budget-friendly engine management solution designed for turbocharged, supercharged, and naturally aspirated builds. Whether you're tackling a drag strip, autocross, or weekend cruiser, MS2 gives you the tools to dial in your engine’s performance.

With the MS2/Extra firmware pre-loaded, this system supports a wide array of advanced features for serious tuners and racers — including coil-on-plug ignition, boost control, staged injection, nitrous, and much more.

Core Capabilities:

• Supports Speed Density, Alpha-N, or blended load types

• Onboard 21 psi MAP sensor (upgradeable to 44 psi)

• Fuel control with 1μs resolution (100x finer than MS1)

• USB communications + SD card data logging (SD card not included)

• Closed-loop fuel and idle control

• Narrowband & wideband O2 support

• Configurable barometric correction and rev limiter

• Tunable with free TunerStudio MS software (upgradeable to full version)

Advanced MS2/Extra Firmware Features:

• 16x16 VE tables and 12x12 spark tables

• 2-stage nitrous control, boost control, water injection

• Launch control, table switching, and shift light output

• Native support for OEM trigger wheels

• Coil-on-plug and wasted spark ignition options

• PWM or stepper idle valve control (PWM now natively supported via v3.57 board)

• Knock sensing and AFR targets

Hardware Highlights:

• Professionally machined brushed aluminum case with endplates

• Surface-mount v3.57 PCB for higher reliability and build quality

• DB37 and DB15 connectors included (female, with hardware)

• CANBus support for expandability with I/O Extenders or GPIO boards