Take the guesswork out of the garage. TuneLab is a free, physics-based tuning calculator and color resource for Forza Horizon 6, built by a driver, for drivers. Drop your vehicle's specs into the app, select your discipline, and instantly get an exact, track-ready setup for your build. No complex spreadsheets, no guesswork, and no "vibe-based" math—just raw automotive physics scaled perfectly to the FH6 engine.

PHYSICS-BASED TUNING SYSTEM
TuneLab calculates precise values for every critical aspect of your vehicle setup:
• Suspension: Exact spring rates, damping (rebound/bump), and anti-roll bars (ARB).
• Alignment: Optimized camber, toe, and caster angles for maximum mechanical grip.
• Drivetrain: Baseline differential settings tailored to your drivetrain layout (AWD, RWD, FWD).
• Gearing: Fast, balanced gear ratio baselines to maximize your powerband.

8 DISTINCT TUNE MODES
Whether you are building a meta-competitive grip monster or a casual cruiser, TuneLab features specialized algorithms for 8 distinct driving styles:
• Race: Maximize cornering speed and lap-time consistency.
• Touge: Nimble, responsive handling for tight, technical mountain passes.
• Wangan: High-speed stability and aerodynamics for highway top-speed runs.
• Drift: Smooth, predictable angle control and break-away transitions.
• Drag: Ultimate straight-line launch traction and weight-transfer physics.
• Rally: Robust, compliant suspension travel for dirt, gravel, and jumps.
• Rain: Softened, progressive compliance to maintain grip on wet asphalt.
• General: A solid, balanced baseline street setup for daily driving and exploring.

PAINTLAB: THE ULTIMATE HSB COLOR DATABASE
Don't exit the game to look up livery codes. Browse an integrated database of all 10,993 FH6 paint colors. Get exact Forza HSB (Hue, Saturation, Brightness) values instantly, save your favorite manufacturer colors, or use the custom color builder to design your own perfect liveries.

AI TUNING ENHANCEMENT (BYOK)
Bring your own free Gemini API key to unlock advanced AI insights. Get intelligent, context-aware per-value notes and track-side adjustments tailored to your specific build and feedback, using your own API quota. Your key stays local—nothing is ever stored on external servers.

COMMUNITY DRIVEN & LIVE UPDATED
• 500+ Car Database: Instantly access accurate weight distributions, engine placements, and stock specs, synced live via GitHub.
• 100% Free: No ads, no paywalls, no subscriptions, and no data tracking. Ever.
• Open Source: Built transparently so the community can contribute car data, validate physics formulas, and keep the calculator at the cutting edge of the FH6 meta.

Stop opening Excel mid-session. Download TuneLab today, hit the garage, and engineer your perfect drive.

Disclaimer: TuneLab is an independent, community-driven tool and is not affiliated with Turn 10 Studios, Playground Games, Xbox Game Studios, or Microsoft.