BMW 335i Stage 1 ECU Tune | 306hp to 365hp

We recently carried out a bespoke Stage 1 ECU calibration on this BMW 335i, unlocking additional performance from the turbocharged petrol engine while retaining the smooth drivability and refinement expected from a BMW daily driver.

Performance Figures

Stock: 306 hp / 400 Nm

Stage 1: 365 hp / 520 Nm

Increase: +59 hp / +120 Nm

The Stage 1 calibration delivers a noticeable improvement throughout the rev range, with stronger mid-range torque, sharper throttle response, and improved acceleration. The additional torque helps the vehicle pull harder from lower RPM, making everyday driving, overtaking and motorway acceleration feel significantly more effortless.

Unlike generic tuning files, our calibrations are developed to provide strong, usable performance while remaining within the safe operating limits of the vehicle.

Additional Software Options Included

As part of this vehicle's setup, we also carried out:

• Speed Limiter Removal

Dealer-Level Diagnostics Included

Every tuning appointment includes advanced dealer-level diagnostics before and after the calibration process.

This allows us to identify any underlying issues that could affect performance and confirm the vehicle is operating correctly once the software installation is complete.

Fully Mobile BMW Tuning

At MTech Tuning, we provide a fully mobile service, travelling directly to your home or workplace at no additional cost.

There's no need to visit a tuning centre or leave your vehicle for the day. We bring professional ECU tuning and diagnostics directly to you.

We regularly cover North Somerset, Bristol, South Wales and surrounding areas, providing mobile ECU remapping, gearbox tuning and performance software solutions for BMW, Audi, Volkswagen, Mercedes-Benz and many other manufacturers.

0% Finance Available

We understand that vehicle modifications can be a significant investment, which is why we offer flexible finance options, including 0% finance on eligible purchases.

Instant BHP Checker

Curious what your vehicle is capable of?

Visit our website and use the Instant BHP Checker to view estimated performance gains for your car, or get in touch to discuss the best tuning options available.

BMW 335i Stage 1 Remap • Mobile ECU Tuning • Dealer-Level Diagnostics • North Somerset & South Wales

MTech Tuning – Professional Mobile ECU & Gearbox Tuning