Unlock Your Performance Data

A new tool that mines your logs for injector pulse-width steps and measures how long the wideband takes to respond, binned by RPM and load. Every cell carries a sample count and confidence, sparse cells stay blank, and the result exports as CSV, clipboard, PNG or PDF in milliseconds, engine cycles or ignition events — ready for your ECU's closed-loop O2 delay table.

Detects tip-ins, shifts the lambda window by the measured delay, and reports the lean or rich excursion against target with a suggested starting correction, binned by RPM and throttle rate. Runs across several logs at once and composes with a lambda delay table generated in the same session.

Open .msl datalogs straight from TunerStudio's legacy ASCII logger — and from RealDash, which writes the same format when it logs a Speeduino over Bluetooth. Units come from the file, GPS columns feed the track map, and cable-free logging sessions load with no conversion step.

Open RaceChrono and RaceChrono Pro CSV v3 session exports directly — GPS, phone sensors, and OBD/CAN channels on one timeline, with lap numbers and the track map ready out of the box. Analyze your track days on a big screen instead of your phone.

Logs with GPS channels now draw the track beside your chart — automatic lap detection, any channel painted onto the racing line in Viridis or Turbo, hover to scrub the timeline, and opt-in Esri or OpenStreetMap satellite backgrounds. Works with every supported log format, and coordinate encodings (NMEA, scaled integers) are normalized automatically.

Split your chart into up to 10 independent panels — each with its own Y-axis, channels, and scale. Resize, collapse, and rearrange with a shared synchronized timeline.

Built-in Model Context Protocol server lets Claude Desktop control UltraLog — load files, select channels, compute formulas, and analyze data with 23 AI tools.

New parser for BlueDriver Bluetooth OBD-II scanner CSV exports — analyze standard OBD-II PIDs from any compliant vehicle.

New unit preference for Air-Fuel Ratio and Lambda display — switch between AFR and Lambda across all mixture channels.

14 professional analysis algorithms including AFR drift detection, Butterworth filters, volumetric efficiency, and statistical correlation.

Full internationalization with 15 languages including English, Spanish, German, French, Chinese, Japanese, and more.

Rust 1.94.1, egui 0.34, rewritten PDF export, and updated dependencies for better performance and stability.