Live demo

See Auto Tracker analyze a JB4 log

This is the real analyzer running on a sample Genesis G70 3.3T log — the same engine that runs on your own data. Tap a run to zoom the charts, or overlay the pulls to compare them.

Sample analysis · 2 WOT pulls

demo_g70_pulls.csv
Peak boost

21.0 psi

Knock events

1

Avg fuel trims

10.9%

Flags

1 crit · 4 warn

critical · knock

Run 1: 1 sudden timing drop (worst 6°) — likely knock with the ECU protecting the engine. Check fuel octane, plugs, and intake temps.

warning · boost

Run 1: boost held 3 psi under target while the wastegate was commanding ~max duty (90%) — the signature of a boost leak (charge pipe, coupler, or intercooler) rather than wastegate calibration. Check for leaks first.

warning · fuel

Run 1: AFR ran leaner than 13.5:1 above 10 psi for 3 consecutive samples (max 13.8:1) — typically enrichment lag during spool; keep an eye on it.

warning · boost

Run 2: boost held 3.6 psi under target while the wastegate was commanding ~max duty (90%) — the signature of a boost leak (charge pipe, coupler, or intercooler) rather than wastegate calibration. Check for leaks first.

warning · fuel

Fuel trims averaged 10.9% at WOT — adding fuel (possible intake leak, weak fuel delivery, or injectors). Beyond ±10% deserves attention.

info · temps

Run 1: intake temps climbed 32° during the pull (peak 132°) — intercooler heat soak. Expect some timing pulled when hot.

Boost vs target (psi)

Ignition timing (°)

AFR & fuel trims

Temperatures (°F)

This is a sample log. Start a free trial to upload and analyze your own.