BMW S68 FEMTO Unlock & Tuning Package - MTech Performance

Unlock the true potential of your G90 M5 or BMW XM.

The S68 engine is BMW’s latest twin-turbo V8 hybrid platform, and it requires a dual ECU unlock before tuning can begin. Our MTech Performance FEMTO Unlock & Tuning Package is built specifically for this next-generation BMW platform, supporting the G90 M5 and BMW XM.

Each S68 tuning package includes the required dual ECU FEMTO unlock along with a custom tune developed specifically for your vehicle. Choose between a custom 93 octane calibration or a custom E40 ethanol blend calibration based on your setup, fuel, and performance goals.

Why Choose MTech?

• Proven Tuning Experience: We've been unlocking and tuning BMW ECUs for years, with hands-on experience across modern BMW performance platforms.

• Secure Dual ECU FEMTO Unlock: The BMW S68 platform uses two ECUs, and both must be FEMTO unlocked before tuning is possible.

• Custom S68 Tuning: Every S68 calibration is custom tuned for your specific G90 M5 or BMW XM. We do not use generic OTS maps on this platform.

• No Hassle Shipping: We help handle the ECU shipping process so both ECUs get to us, unlocked, and safely returned to you.

• FEMTO Flasher Support: The S68 platform is tuned through FEMTO Flasher after the unlocked ECUs are reinstalled into the vehicle.

Available Custom Tuning Packages

1. Custom 93 Octane Tune
Designed for G90 M5 and BMW XM owners running premium 93 octane pump fuel. This package includes the dual ECU FEMTO unlock and a custom 93 octane calibration developed specifically for your vehicle, modifications, and performance goals.

2. Custom E40 Blend Tune
For owners looking for increased performance using an ethanol blend, our custom E40 calibration is developed around your specific S68 setup. This package includes the dual ECU FEMTO unlock and custom E40 tuning through FEMTO Flasher.

Key Benefits

• Full FEMTO unlock for both BMW S68 ECUs

• Custom BMW S68 ECU tuning

• Compatible with BMW G90 M5 and BMW XM platforms

• Custom 93 octane tuning

• Custom E40 ethanol blend tuning

• FEMTO Flasher tuning support

• Improved acceleration and Dragy performance potential

• Secure ECU shipping and fast turnaround

• Remote tuning through the vehicle’s OBD2 connection

• Real tuning support from MTech Performance

• 960 WHP achieved on a G90 M5 using our custom E40 tune

How It Works

Step 1: Remove and label both ECUs
The BMW S68 platform uses two ECUs. Before shipping, clearly label each ECU as Driver Side and Passenger Side.

Step 2: Ship both ECUs to MTech Performance
Ship your pre-labeled driver-side and passenger-side ECUs to our Fort Lauderdale, Florida facility. We will hand deliver both ECUs to our neighbors at FEMTO Miami for the required FEMTO unlock.

Once the unlock process is complete, both ECUs will be returned to you.

Step 3: Reinstall both unlocked ECUs
Once you receive the unlocked ECUs, reinstall them into your BMW G90 M5 or BMW XM.

Step 4: Remote custom tuning through the OBD2 port
After both ECUs have been reinstalled, you will need a Windows laptop, a stable internet connection, and a BMW ENET cable.

MTech Performance will remotely connect to your Windows laptop and perform your custom S68 tune through the vehicle’s OBD2 connection using FEMTO Flasher.

Important: Both ECUs must be correctly labeled, shipped, FEMTO unlocked, returned, and reinstalled before the remote tuning process can be completed.

📍 MTech Performance

BMW G90 M5 & BMW XM Custom S68 Tuning

The BMW S68 is a highly advanced twin-turbo V8 hybrid platform that requires both factory ECUs to be unlocked before custom tuning can be performed.

MTech Performance provides a complete BMW G90 M5 FEMTO unlock and custom tuning solution as well as BMW XM FEMTO unlock and custom tuning, combining the required dual ECU unlock process with custom calibration through FEMTO Flasher.

Unlike a generic off-the-shelf tune, our custom S68 tuning is developed specifically around your vehicle, fuel type, modifications, and performance goals.

Ready to tune your BMW S68?

Order the BMW S68 FEMTO Unlock & Tuning Package today and get a complete dual ECU FEMTO unlock and custom tuning solution for your BMW G90 M5 or BMW XM.

Choose between a custom 93 octane tune or custom E40 blend tune and unlock the performance potential of your BMW S68 platform with MTech Performance.