BMW M3 F80 / M4 F82 F83 – Stage 2 Performance Package Custom ECU & Gearbox Tune with Hardware Upgrades 530–550bhp)

Take your F8X to the next level with our Stage 2 Performance Package — a proven combination of hardware upgrades and a fully bespoke ECU and TCU calibration. Designed in-house and tested on the road, this setup significantly improves throttle response, midrange torque, and top-end power, all while keeping driveability and safety intact.

What’s Included

• FJM Stage 2 Custom ECU Tune

Our bespoke calibration is built specifically around your fitted hardware:

• Catless Downpipes
• Single-piece Midpipe / Resonator Delete
• Drop-in Performance Air Filters

We optimise boost, ignition, torque strategy, and throttle mapping to deliver power smoothly and safely — no base maps, no shortcuts.

• FJM Stage 3 XHP Gearbox Tune We apply a full DCT remap using XHP Flash Tool to match your engine’s increased torque.

• 25–50% faster shifts depending on mode
• Rev-matched downshifts
• Gear display enabled in all modes
• True manual mode (no forced upshifts)
• Stronger clutch holding via increased line pressure
• Sharper paddle response

• FJM Performance Drop-In Filters (Included) High-flow filters that drop into your OEM airboxes — improving breathing without extra noise or fitment issues.

• FJM Midpipe Upgrade Single high-flow midpipe with resonator/OPF delete, improving exhaust tone and reducing backpressure.

• FJM Catless Downpipes TIG-welded, heat-resistant stainless downpipes for better flow and spool. Available in catless or sports cat configuration depending on your emissions preference.

Performance Estimates (Stage 2 – Real World Testing)

• Power: 530–550 bhp
• Torque: 750–780 Nm
• 0–60 mph: Approx. 3.6/4.2 seconds (with traction)
• 100–200 km/h: Approx. 6.6–7seconds

All times are Dragy-verified from cars using this exact setup. Results depend on tyre condition, fuel quality (99 RON required), and ambient temps.

Compatible ModelS

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

Why FJ Motorwerkes? We test every calibration on the road, not just the dyno. Our Stage 2 tuning is built from years of hands-on experience with the F8X platform, giving you a setup that’s powerful, reliable, and properly dialled in for daily or spirited use. 

Fuel Requirement: This package is built for 99 RON premium fuel only (Tesco Momentum or Shell V-Power). Please ensure this fuel is used for at least 1 full tank prior to tuning.

Legal Disclaimer: 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.