BMW M3 F80 / M4 F82 F83 – Stage 1 Performance Package Custom ECU & Gearbox Tune Stock Hardware – 515bhp

Unlock the real potential of your F8X M3 or M4 with our Stage 1 Custom Tune, built specifically for stock hardware cars running premium 99 RON fuel. Paired with our Stage 3 XHP gearbox calibration, this package dramatically improves power delivery, throttle response, and shift performance — all while maintaining OEM-level driveability.

What’s Included 
• FJM Stage 1 Custom ECU Tune, Our in-house calibration is developed specifically for the F80/F82/F83 platform using your existing hardware. The tune improves ignition timing, torque control, throttle mapping, and boost strategy — delivering sharper acceleration and consistent real-world power.

• Optimised for Tesco Momentum 99 or Shell V-Power
• Smooth daily driving with improved top-end and mid-range pull
• Designed for cars with stock turbos, stock exhaust, and OEM intake

• FJM Stage 3 XHP Gearbox Tune We remap your 7-speed DCT using XHP Flashtool to improve shift speed, remove torque limits, and enable true manual mode (no forced upshifts).

• Faster shifts (25–50% quicker depending on mode)
• Rev-matched downshifts with throttle blip
• Gear display enabled in all drive modes (where supported)
• Increased line pressure for stronger clutch holding power
• Sharper paddle response and better shift logic

Performance Estimates (Stage 1 Custom Tune)

• Power: Up to 515 bhp
• Torque: Around 700 Nm
• 0–60 mph: Approx. 3.5–3.8 seconds (with good traction)
• 100–200 km/h: Approx. 7.3–7.6 seconds

All figures are based on real-world results using Dragy testing on healthy vehicles running proper 99 RON fuel. Actual performance may vary depending on conditions, tyres, and vehicle health.

Compatible Models

• BMW M3 F80 (2014–2018)
• BMW M4 F82 Coupe (2014–2020)
• BMW M4 F83 Convertible (2014–2020) 

Why FJ Motorwerkes? We’ve spent years refining our F8X calibrations through road testing, dragy runs, and detailed logging. Our Stage 1 package delivers the perfect balance of safe, reliable power with OEM-level smoothness and full gearbox optimisation. This isn’t a base map — it’s a fully bespoke calibration built from experience.

Fuel Note: This tune is designed for use with 99 RON premium fuel only (Tesco Momentum or Shell V-Power). Ensure the correct fuel is being used for at least one full tank prior to tuning.

Legal Notice: All tuning services and vehicle modifications offered by FJ Motorwerkes are intended for off-road or motorsport use only. These services may not comply with local emissions or road safety regulations.