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Welcome to the UltraLog Wiki

UltraLog is a high-performance, cross-platform desktop application for viewing and analyzing ECU (Engine Control Unit) log files from automotive performance tuning systems.

Quick Links

Getting Started	Reference	Support
Installation	Supported-ECU-Formats	Troubleshooting
Getting-Started	Unit-Conversion	FAQ
User-Guide	Field-Normalization	Development
	Legal	Contributing

Key Features

• Multi-channel visualization - Plot up to 10 data channels simultaneously
• High-performance - LTTB downsampling handles millions of data points smoothly
• Multiple ECU support - Haltech, ECUMaster EMU Pro, RomRaider, Speeduino/rusEFI
• Cross-platform - Windows, macOS, and Linux
• Unit conversion - Metric/Imperial for temperature, pressure, speed, and more
• Accessibility - Colorblind-friendly color palette

Supported ECU Systems

ECU System	Status	File Format
Haltech	Full Support	CSV from NSP
ECUMaster EMU Pro	Full Support	CSV export
RomRaider	Full Support	CSV from Logger
Speeduino / rusEFI	Full Support	MLG binary
MegaSquirt	Coming Soon	-
AEM	Coming Soon	-
MoTeC	Coming Soon	-

System Requirements

Minimum Requirements

• OS: Windows 10, macOS 10.15, or Linux (most distributions)
• RAM: 4 GB
• Storage: 50 MB for application
• Display: 1280x720 resolution

Recommended

• RAM: 8 GB or more (for large log files)
• Display: 1920x1080 or higher

Getting Help

• GitHub Issues: Report bugs or request features
• Troubleshooting: See the Troubleshooting page for common issues
• FAQ: Check the FAQ for frequently asked questions

Version Information

• Current Version: 1.7.1
• License: AGPL-3.0
• Author: Cole Gentry

Open Source Commitment

UltraLog is committed to open-source values:

• AGPL-3.0 Licensed - Free to use, modify, and distribute
• Open Invention Network Member - Part of the largest patent non-aggression community protecting Linux and open source
• Documented Format Specifications - Published for community benefit and interoperability

See Legal for full details on licensing, trademarks, and our OIN membership.

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