Bmw M3 G80 G81 M4 G82 G83 M2 G87 - Stage 1 package FJM650 - STAGE 1 Custom Tuned

FJM650 Performance Package – BMW S58 Engine & Gearbox - Stage 1 Custom Tunes

(G80 G81 M3 / G82 G83 M4 / G87 M2)

Unlock the potential of your S58-powered BMW with the FJM650 Performance Package — our entry-level Stage 1 setup that combines OEM-grade reliability with a noticeable boost in power, torque, and drivability. Developed, tested, and refined in-house, this package is designed for those looking to start their performance journey the right way — safely, and with zero compromise.

What’s Included in the FJM650 Package:

• FEMTO ECU Unlock We send your factory ECU to Finland for Femto unlock, enabling full tuning capabilities. This critical step allows us to access and safely modify ignition timing, fuel strategies, boost control, and torque management. (Fastest Turn around in the uk 3/4 days).

• Stage 1 ECU Calibration (Bootmod3 licence included) Custom-mapped engine tuning specifically dialed in for this exact hardware combo. Enjoy optimized power, torque, and throttle response — all with OEM-level drivability.

• FJM Stage 3 TCU Calibration (XHP Gearbox Map) Enhanced shift speed, refined shift points, and increased torque handling. Your gearbox becomes sharper, faster, and better matched to the newfound power of the engine. All our tunes are paired with gearbox tune as its essential to allow more torque. 

• Optional: FJM Performance Drop-In Filters. High-flow filters to improve intake airflow while retaining your OEM airboxes. A subtle upgrade to support efficiency and engine breathing.

Performance Expectations (Using high-quality fuel such as Tesco Momentum 99 or Shell V-Power)Power:

• Up to 650 bhp
• Torque: Around 870 Nm
• 0–60 mph: Approx. 3.1.3.4 seconds (xDrive)
• 100–200 km/h: Approx. 5.85–6.2 seconds
• Quarter Mile: Mid to high 10s, depending on traction and conditions

All performance estimates are based on real-world road testing, using verified Dragy times from vehicles running this exact package. Individual results may vary based on vehicle condition, tyre setup, fuel quality, and ambient temperature.

Compatible Models:

•  BMW G80 M3 
•  BMW G81 M3 Touring
•  BMW G82 M4
•  BMW G83 M4 Convertible
•  BMW G87 M2

Upon collection, your vehicle will be fully prepared and ready to go. One of our advisers or technicians will be happy to answer any questions you may have — and if you’d like, we can also take you for a test drive to go through the setup and ensure you’re fully comfortable with the upgrades.

Why Choose FJ Motorwerkes?

We’re not just parts suppliers, we’re performance specialists. Every package we offer has been tested on our own cars first, with tuning refined through logging, data analysis, and real-world road and strip testing. No base maps. No shortcuts. Just results.