Docs / Megasquirt / Supported Signals
Megasquirt — MS3 / MS3Pro

Supported Signals

Signals decoded from both Megasquirt CAN output modes — Realtime Broadcast (generic MS3 frame set) and Dash Mode (compact dash-optimised frames). Both are decoded simultaneously; the gauge merges data from whichever frames arrive.

500 kbit/s 11-bit Standard IDs Realtime + Dash Mode

Enable CAN output in TunerStudio. The gauge decodes both Realtime Broadcast and Dash Mode frames simultaneously, so you can enable either or both in TunerStudio. Frame IDs in the Realtime set match the standard MS3 broadcast table (base ID 0x5F0 = frame 1520). CAN speed must be set to 500 kbit/s.

Realtime Broadcast Frames Standard MS3 / MS3Pro CAN output — enable in TunerStudio CAN Broadcasting
CAN IDFrame #Signal(s)Unit / Notes
0x5F0 1520 Engine RPM rpm
0x5F2 1522
Barometric Pressure MAP / Boost Intake Air Temp (IAT) Coolant Temp (CLT)
kPa kPa / psi gauge °C °C
0x5F3 1523
Throttle Position (TPS) Battery Voltage AFR 1
% V AFR
0x5F7 1527 Oil Temp °C
0x611 1553 Gear number
0x61A 1562 Vehicle Speed km/h
Dash Mode Frames Compact dash-optimised output — enable in TunerStudio CAN Dash
CAN IDFrame #Signal(s)Unit / Notes
0x5E8 1512
MAP / Boost Engine RPM Coolant Temp (CLT) Throttle Position (TPS)
kPa / psi gauge rpm °C %
0x5E9 1513 Intake Air Temp (IAT) °C
0x5EA 1514
AFR 1 Oil Temp
AFR °C
0x5EB 1515
Battery Voltage Knock Level
V raw
0x5EC 1516 Vehicle Speed km/h