Free ECU Log Analysis Tool
MET Log Viewer is a free, browser-based ECU data visualisation tool built by Mobile Eco Tuning for tuners, remappers, and performance enthusiasts. Load any CSV log file from your ECU logger or diagnostic software and instantly visualise engine channels — no installation, no account, no data upload.
What it does
Multi-channel charting
Plots RPM, boost pressure, lambda, MAF, fuel rail pressure, ignition timing, EGT, DPF soot load and more — all on a single interactive chart.
Setpoint deviation flags
Automatically detects setpoint vs actual pairs (e.g. boost target vs boost actual) and flags deviations in real time as you hover.
Built-in analysis views
Built-in views for Boost Control, Lambda & Fuelling, Airflow & MAF, Engine Timing, Thermo Control, DPF & Exhaust, and Fuel Rail.
100% private, browser-based
Works entirely in your browser — your log data never leaves your device.
Compatible with
Compatible with logs from VCDS, OBD Eleven, ODIS, CarScanner, Torque Pro, MoTeC, Link ECU, Haltech, and any tool that exports CSV data.
Simply upload your log file in the METLog Viewer tool below