BMW ECU & Gearbox Remapping in North Somerset & South Wales


MTechTuning specialises in professional ECU and gearbox remapping for BMW vehicles, delivering improved performance, drivability and efficiency while maintaining reliability. We provide a fully mobile BMW tuning service across North Somerset and South Wales, carrying out all work at your home or workplace.


Specialist BMW Tuning Using Dealer-Level Diagnostics


BMW vehicles are engineered with performance in mind, but factory software often limits their full potential. Our BMW ECU and gearbox remaps are carefully calibrated to improve throttle response, torque delivery and overall drivability without compromising long-term reliability.


All BMW tuning work is carried out using dealer-level diagnostics, with full vehicle health checks completed before and after tuning. This ensures all systems are operating correctly and allows us to tailor the software specifically to your vehicle.



BMW ECU & Gearbox Remapping


For the best results, BMW ECU remapping can be paired with gearbox remapping to ensure the engine and transmission work together seamlessly. This can result in smoother gear changes, improved shift behaviour and better use of the increased torque.


BMW Models We Commonly Tune:


• BMW 1 Series, 2 Series, 3 Series and 4 Series 

• BMW 5 Series and 6 Series 

• BMW X Series models 

• BMW M Performance models 

• Petrol and diesel BMW engines

Safe, Reliable BMW Tuning


Reliability is always the priority. All BMW ECU and gearbox software installed by MTechTuning is covered by a lifetime software warranty, and clear advice is provided before any work is carried out.


If you’re looking for professional BMW ECU or gearbox remapping, get in touch to discuss your vehicle and requirements.


We are rated 5 star on Google:

MTech Tuning google profile
April 8, 2026
Engine Tune: Stock - 122 hp / 360 nm Stage 2 - 170 hp / 430 nm ( +48 hp +70 nm ) Ad ons: -Speed limiter off -DPF solution -Hardcut limiter Advanced dealer level diagnostic included 🏁 We are fully mobile meaning we will travel to your vehicle at home or work free of charge! 🏡 Get in touch now or visit our website for INSTANT BHP CHECKER Link in bio. 📲 0% finance options available
April 8, 2026
Engine Tune: Stock - 145 hp / 210 nm Stage 1 - 170 hp / 300 nm ( +25 hp +90 nm ) Ad ons: -Speed limiter off Advanced dealer level diagnostic included 🏁 We are fully mobile meaning we will travel to your vehicle at home or work free of charge! 🏡 Get in touch now or visit our website for INSTANT BHP CHECKER Link in bio. 📲 0% finance options available
April 8, 2026
Engine Tune: Stock - 130 hp / 340 nm Stage 1 - 190 hp / 420 nm ( +60 hp +80 nm ) Ad ons: -Speed limiter off -EGR & DPF solution Advanced dealer level diagnostic included 🏁 We are fully mobile meaning we will travel to your vehicle at home or work free of charge! 🏡 Get in touch now or visit our website for INSTANT BHP CHECKER Link in bio. 📲 0% finance options available