RomRaider
RomRaider logs
RomRaider Logger CSVs for Subaru ECUs, and generic Time-first CSVs.
Overview
Full support for RomRaider ECU log files. RomRaider is an open-source tuning suite primarily used for Subaru ECUs, providing comprehensive logging capabilities for OEM and modified ECU parameters.
Supported File Format
- Type: CSV text file (comma-delimited)
- Extension:
.csv - Source: Exported from RomRaider Logger
- Identifier: File begins with
Timecolumn header
How to Export from RomRaider
- Open RomRaider Logger
- Start logging your parameters
- When complete, go to File → Save Log
- Choose CSV format and save location
- The file is ready to load in UltraLog
CSV Format Details
RomRaider logs use a straightforward CSV format:
Time (msec),Engine Speed (rpm),Engine Load (%),A/F Correction #1 (%)
0,850,15.2,1.5
20,855,15.4,1.6
40,860,15.3,1.5
Key characteristics:
- First column is always timestamp in milliseconds
- Column headers include units in parentheses
- Comma-separated values
- Timestamps are converted to relative seconds automatically
Automatic Unit Extraction
UltraLog automatically extracts units from column headers:
| Header Example | Extracted Name | Extracted Unit |
|---|---|---|
Engine Speed (rpm) |
Engine Speed | rpm |
A/F Correction #1 (%) |
A/F Correction #1 | % |
Manifold Relative Pressure (psi) |
Manifold Relative Pressure | psi |
Coolant Temperature (C) |
Coolant Temperature | C |
For columns without units in parentheses, UltraLog infers units from common patterns.
Supported Channels
Engine Parameters
- Engine Speed (RPM)
- Engine Load
- Manifold Absolute/Relative Pressure
- Throttle Position
- Mass Airflow
Fuel System
- A/F Correction #1 and #2
- A/F Learning #1 and #2
- A/F Sensor readings
- Fuel Injector timing
Ignition System
- Ignition Timing
- Knock Correction
- Fine Knock Learning
- Feedback Knock Correction
Temperatures
- Coolant Temperature
- Intake Air Temperature
Subaru-Specific
- IAM (Ignition Advance Multiplier)
- DAM (Dynamic Advance Multiplier)
- Fine Learning tables
- Various OEM diagnostic parameters
Timestamp Handling
RomRaider logs time in milliseconds. UltraLog:
- Converts milliseconds to seconds for display
- Calculates relative time from the first record
- Supports precise cursor positioning and playback
Channel names
With field normalization on, these RomRaider names show as one standard name. From the OpenECU Alliance RomRaider CSV Log adapter v1.2.0.
| Shown as | Unit | Names in the log |
|---|---|---|
| A/F Learning | % | A/F Learning #1 · A/F Learning #1 (%) · A/F Learning · LTFT · Long Term Fuel Trim · Air/Fuel Learning #1 |
| A/F Correction | % | A/F Correction #1 · A/F Correction #1 (%) · A/F Correction · STFT · Short Term Fuel Trim · Air/Fuel Correction #1 |
| DAM | multiplier | DAM · Dynamic Advance Multiplier · Dynamic Adv Multiplier · Advance Multiplier |
| Feedback Knock Correction | ° | Feedback Knock Correction · Feedback Knock Correction (degrees) · Knock Correction · FBKC |
| Fine Knock Learning | ° | Fine Knock Learn · Fine Knock Learn (degrees) · Fine Knock Learning · FKL |
| IAM | multiplier | IAM · Ignition Advance Multiplier |
| Knock Retard | ° | Knock Correction |
| Idle Valve Step | count | Idle Speed Control Valve Step |
| Roughness Monitor Cylinder 1 | count | Roughness Monitor Cylinder #1 |
| Roughness Monitor Cylinder 2 | count | Roughness Monitor Cylinder #2 |
| Roughness Monitor Cylinder 3 | count | Roughness Monitor Cylinder #3 |
| Roughness Monitor Cylinder 4 | count | Roughness Monitor Cylinder #4 |
| Gear Position | gear | Gear Position · Gear · Current Gear |
| Main Accelerator Sensor Voltage | V | Main Accelerator Sensor |
| Sub Accelerator Sensor Voltage | V | Sub Accelerator Sensor |
| Battery Voltage | V | Battery Voltage · Battery Voltage (V) · Battery |
| Fuel Level Voltage | V | Fuel Level Voltage |
| MAF Voltage | V | Mass Airflow Sensor Voltage · Mass Airflow Sensor Voltage (V) · MAF Voltage · Air Flow Sensor Voltage |
| O2 Sensor Current | ma | Air/Fuel Sensor #1 Current |
| O2 Sensor Resistance | ohms | Air/Fuel Sensor #1 Resistance |
| Front O2 Voltage 1 | V | Front O2 Sensor #1 |
| Front O2 Voltage 2 | V | Front O2 Sensor #2 |
| Rear O2 Voltage | V | Rear O2 Sensor |
| Exhaust OCV Current | ma | Exhaust OCV Current Left |
| Intake OCV Current | ma | Intake OCV Current Left |
| Tumble Valve Sensor Voltage Left | V | Tumble Valve Position Sensor Left |
| Tumble Valve Sensor Voltage Right | V | Tumble Valve Position Sensor Right |
| Throttle Motor Voltage | V | Throttle Motor Voltage |
| Main Throttle Sensor Voltage | V | Main Throttle Sensor |
| Sub Throttle Sensor Voltage | V | Sub Throttle Sensor |
| TPS Voltage | V | Throttle Sensor Voltage |
| A/F Lean Correction | % | Air/Fuel Lean Correction |
| A/F Learning 2 | % | Air/Fuel Learning #2 |
| A/F Learning 3 | % | Air/Fuel Learning #3 |
| A/F Correction 2 | % | Air/Fuel Correction #2 |
| A/F Correction 3 | % | Air/Fuel Correction #3 |
| Alternator Duty | % | Alternator Duty |
| Throttle Motor Duty | % | Throttle Motor Duty |
| Engine Load (Mass) | g/s | Engine Load · Engine Load (RAM) |
| Fuel Pump Duty | % | Fuel Pump Duty |
| Idle Valve Position | % | Idle Speed Control Valve Duty Ratio |
| Engine Load | % | Engine Load · Engine Load (%) · Load · Calculated Load · Engine Load (Relative) (%) |
| Mass Airflow | g/s | Mass Airflow · Mass Airflow (g/s) · MAF · MAF (g/s) · Mass Air Flow |
| O2 Heater Duty | % | Air/Fuel Heater Duty |
| Accelerator Pedal | % | Accelerator Opening Angle |
| Purge Valve Duty | % | CPC Valve Duty Ratio |
| Engine RPM | rpm | Engine Speed · Engine Speed (rpm) · RPM · RPM (rpm) |
| Throttle Position | % | Throttle Opening Angle · Throttle Opening Angle (%) · Throttle Position · TPS · TPS (%) |
| VVT Exhaust Position | ° | Exhaust VVT Advance Angle Left |
| VVT Exhaust Bank 2 Actual | ° | Exhaust VVT Advance Angle Right |
| VVT Exhaust Bank 2 Duty | % | Exhaust OCV Duty Right |
| VVT Exhaust Duty | % | Exhaust OCV Duty Left |
| VVT Intake Position | ° | Intake VVT Advance Angle Left |
| VVT Intake Bank 2 Actual | ° | Intake VVT Advance Angle Right |
| VVT Intake Bank 2 Duty | % | Intake OCV Duty Right |
| VVT Intake Duty | % | Intake OCV Duty Left |
| Wastegate Duty Cycle | % | Wastegate Duty · Wastegate Duty (%) · WG Duty |
| Primary Wastegate Duty | % | Primary Wastegate Duty Cycle |
| Secondary Wastegate Duty | % | Secondary Wastegate Duty Cycle |
| Air-Fuel Ratio | AFR | A/F Sensor #1 · A/F Sensor #1 (AFR) · AFR · Air/Fuel Ratio · Wideband AFR |
| PLX AFR | AFR | PLX AFR · PLX AFR (AFR) · PLX Wideband |
| Injector Duty Cycle | % | Injector Duty Cycle · Injector Duty Cycle (%) · IDC |
| Lambda | λ | Air/Fuel Sensor #1 |
| Lambda 2 | λ | Air/Fuel Sensor #2 |
| Injector Pulse Width | ms | Fuel Injector #1 Pulse Width |
| Pulse Width 2 | ms | Fuel Injector #2 Pulse Width |
| Ignition Advance | ° | Ignition Timing · Ignition Timing (degrees) · Timing Advance · Timing Advance (degrees) · Spark Advance |
| Learned Ignition Timing | ° | Learned Ignition Timing |
| Barometric Pressure | psi | Atmospheric Pressure |
| Boost Pressure | psi | Boost · Boost (psi) · Boost Pressure |
| PLX Boost | bar | PLX Manifold Absolute Pressure · PLX Manifold Absolute Pressure (bar) · PLX Boost |
| Boost Target | psi | Target Boost · Target Boost (psi) · Boost Target |
| Brake Booster Pressure | psi | Brake Booster Pressure |
| High Fuel Pressure | mpa | Fuel Pressure (High) |
| Fuel Tank Pressure | psi | Fuel Tank Pressure |
| Manifold Relative Pressure | psi | Manifold Relative Pressure |
| Manifold Pressure | psi | Manifold Relative Pressure · Manifold Relative Pressure (psi) · Manifold Absolute Pressure · MAP · MAP (psi) |
| Cruise Target Speed | kph | Memorized Cruise Speed |
| Vehicle Speed | kph | Vehicle Speed · Vehicle Speed (mph) · Speed · VSS |
| A/C Relay | A/C Compressor Signal | |
| A/C Request | A/C Switch Signal | |
| Brake Switch | Stop Light Switch | |
| Clutch Switch | Clutch Switch | |
| Fan Relay 1 | Radiator Fan Relay #1 | |
| Fan Relay 2 | Radiator Fan Relay #2 | |
| Fuel Pump Relay | Fuel Pump Relay | |
| Idle Control Active | Idle Switch Signal | |
| Neutral Position Switch | Neutral Position Switch Signal | |
| Starter Signal | Starter Switch Signal | |
| Time | ms | Time · Time (msec) · Time (ms) · Timestamp |
| Coolant Temperature | °C | Coolant Temperature · Coolant Temperature (C) · ECT · Engine Coolant Temp |
| EGT Cylinder 1 | °C | Exhaust Gas Temperature |
| PLX EGT | °C | PLX EGT · PLX EGT (C) · PLX Exhaust Gas Temp |
| Fuel Temperature | °C | Fuel Temperature |
| Intake Air Temperature | °C | Intake Air Temperature · Intake Air Temperature (C) · IAT · IAT (C) |