LegendIQ

LegendIQ is a setup education and engineering app built for Legend car racers worldwide, supporting 10 rule profiles: INEX/USLCI (asphalt, dirt, and road course), UK Oval, UK Circuit, Ireland, Scotland, Japan (LCJ/JAF), Légende Modifié (Quebec), and a fully unlocked custom mode.

The app helps racers organize setup information, compare engine options (Yamaha FJ1200, XJR1250, FZ09, and MT09), track chassis inputs, and understand likely handling tendencies across track types and rule sets.

Features include:
Race type selection (asphalt oval, dirt oval, road course)
10 selectable rule profiles, each with its own weight limits and setup philosophy
Track database with 503 tracks and banking angles, including banking override
Engine selection across four Yamaha spec options
Spring rates and ride height inputs per corner
Crossweight and rear percentage tracking, with rule-specific minimum and maximum limits
Caster (front) and camber (all four corners) inputs
Toe, rear steer, stagger, and tire rollout inputs
Corner weight tracking
Ballast rule summaries and placement guidance per rule profile
Saveable and comparable setup sheets
Generalized educational guidance
Light, dark, and system appearance modes

LegendIQ is free to download. Full access requires an annual subscription, billed through Google Play. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period, and can be managed in your Google Play account settings.

Developed by Erin Brandt Motorsports as a community tool for Legend car racers.

Disclaimer:
This tool is for education and setup guidance only. Always verify rules with your local sanctioning body and tune the car to your driver, chassis, and track conditions. Some rule sets (e.g. Scotland 2026) are pending official verification — confirm current event rules before racing.

Trademark and Affiliation Disclaimer:
LegendIQ is independently developed by Erin Brandt Motorsports. Erin Brandt Motorsports is not affiliated with, endorsed by, sponsored by, or officially connected to U.S. Legend Cars International, USLCI, INEX, Yamaha, LCJ, JAF, or any listed racetrack, sanctioning body, series, manufacturer, component supplier, trademark owner, or rights holder. All names, marks, logos, track names, series names, manufacturer names, and product names are used only for identification, compatibility reference, education, and setup documentation. All trademarks and copyrights remain the property of their respective owners.

Recent changes:
Suspension tab is back on Setup Inputs.

Your live setup sheet, driver feedback, and notes now save automatically when you leave the app and restore when you return. Notes save as you type. Local saving is on by default.

Track Info now shows INEX sanctioning and region, plus surface and seasonal notes.

Added Parque Viva (Costa Rica) and the Costa Rica Racing League resource link.

Rulebooks bundled for offline reading: INEX, Légende Modifié, UK Oval, Scottish, Ireland, Japan LCJ.