MegaSquirt
MegaSquirt logs
TunerStudio CSV exports from MS1, MS2, MS3 and MS3-Pro.
- File type: CSV datalogs exported from TunerStudio
- Supported devices: MegaSquirt MS1, MS2, MS3, MS3-Pro, MSPNP, MSPNP2, Honda Tuning Studio
- Features: Automatic channel and unit extraction from column headers, boolean value parsing (MIL lamp ON/OFF), anomalous first-row timestamp handling, UTF-8 BOM support
Supported Data
- RPM, MAP, TPS, VSS, Gear
- Injector Duration & Duty Cycle
- Ignition Table & Final Timing
- Coolant Temperature (ECT), Intake Air Temperature (IAT)
- Air-Fuel Ratio, Battery Voltage
- Boost Pressure, Barometric Pressure
- Analog inputs (D14, MAP Voltage, ELD Voltage, TPS Voltage)
- MIL (Malfunction Indicator Lamp) status
Important Notes
- TunerStudio format: The log file must be exported from TunerStudio (starts with "Tune Datalog export")
- Channel variability: Available channels depend on your TunerStudio dashboard configuration
- Compatible software: TunerStudio MS, TunerStudio Lite, Honda Tuning Studio, MegaLogViewer
.mslfiles: Those use a different layout and are handled by the TunerStudio MSL parser below
Channel names
With field normalization on, these MegaSquirt names show as one standard name. From the OpenECU Alliance MegaSquirt TunerStudio Datalog adapter v1.1.0.
| Shown as | Unit | Names in the log |
|---|---|---|
| Engine RPM | rpm | RPM |
| Throttle Position | % | TPS · TPS(%) |
| TPS Voltage | V | TPS Voltage · TPS Voltage(v) |
| Manifold Pressure | mbar | MAP · MAP(mBar) |
| MAP Voltage | V | MAP Voltage · MAP Voltage(v) |
| Boost Pressure | psi | Boost · Boost(psi) |
| Barometric Pressure | mbar | PA · PA(mBar) · Barometric Pressure |
| Injector Pulse Width | ms | INJ Duration · INJ Duration(ms) · Pulse Width · PW |
| Injector Duty Cycle | % | INJ Duty · INJ Duty(%) · Duty Cycle |
| Fuel Value | Fuel Value | |
| Air-Fuel Ratio | AFR | A/F Ratio · AFR · AFR(AFR) |
| Ignition Table | ° | IGN Table · IGN Table(degrees) |
| Ignition Timing | ° | IGN Final · IGN Final(degrees) · Ignition Advance · Spark Advance |
| Coolant Temperature | °C | ECT · ECT(C) · Coolant Temperature · CLT |
| Intake Air Temperature | °C | IAT · IAT(C) · Intake Air Temperature |
| Battery Voltage | V | BAT Voltage · BAT Voltage(v) · Battery Voltage |
| ELD Voltage | V | ELD Voltage · ELD Voltage(v) |
| Vehicle Speed | kph | VSS · VSS(kmh) · Vehicle Speed |
| Gear Position | gear | Gear |
| MIL | MIL | |
| Analog D14 | V | D14 · D14(v) |