Shop/BMW
Bosch MDG1 (2020+ BMW / MINI / Supra / Mercedes / Lotus / Range Rover)
Mail-In ECU Unlock Service
Bosch MDG1 (2020+ BMW / MINI / Supra / Mercedes / Lotus / Range Rover)
Unlock the full potential of your 2020+ vehicle equipped with the Bosch MDG1 ECU.
Modern MDG1 ECUs are factory-locked and cannot be tuned through OBD. Our professional unlock service removes these restrictions, giving you full read and write access for complete tuning freedom.
No subscriptions.
No hidden fees.
No platform lock-in.
Just full control of your ECU.
What This Unlock Provides
• Full bench unlock of Bosch MDG1 ECU
• Complete read & write capability
• Freedom to tune with your preferred platform
• Supports Stage 1, Stage 2, flex fuel, burble tuning, ethanol setups, and custom calibrations
• One-time unlock — no recurring costs
Once unlocked, your ECU is ready for professional performance tuning.
How the Service Works
Mail-In Unlock – USA Facility
• We provide a prepaid shipping label
• You remove the ECU and ship it to our USA unlock facility
• OR have a local dealer remove and ship the ECU on your behalf
Fast shipping to our USA location.
Same-day turnaround once received.
The ECU is shipped back to you directly after unlocking.
This service is handled through our USA facility for speed and efficiency — not our Canada location.
Supported Applications (2020+ Bosch MDG1)
BMW / MINI / Toyota Supra
B48, B58, S58, N63, S63 (2020+)
Mercedes-Benz (2020+)
M260, M264, M256, M177, M178 and other MDG1-equipped engines
Lotus (2020+)
Emira and other MDG1 applications
Select Range Rover / Land Rover (2020+)
Not sure if your vehicle has an MDG1 ECU?
Send us your VIN and build date and we’ll confirm for you.
Important Notes
• ECU removal is required
• Applies only to Bosch MDG1 ECUs
• Vehicle must be in proper mechanical condition
• Professional tuning recommended
Unlock your MDG1 ECU the right way and gain full tuning freedom.
Contact Custom Tunez to start your unlock process today.
Before you order
Not sure this is the right file for your car? Ask first — we would rather talk you out of the wrong product than refund it.
Your factory file is archived
Going back to stock is always one flash away.
Built for your VIN
That is why we ask for it at checkout — the calibration is written for your exact engine and software version, not a generic map.
Support after the sale
Installation help by phone, and an engineer on the line for remote flashes.
Not sure which one you need?
Tell us the year, model and what's already on the car. We'll point you at the right product in one call.