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BMW · Stage 1

BMW M135i Stage 1 & Gearbox Tune

A mobile Stage 1 calibration by MTechTuning, with dealer-level diagnostics before and after tuning.

Published vehicle figures

Stock

320hp

450Nm

Stage 1

380hp

550Nm

Difference

+60hp

+100Nm

Figures published for this vehicle. Results vary with model year, software, fuel and condition, so we confirm what suits your car before quoting.

Gearbox Tune:

  • Optimised D & S shift points for better acceleration in part and full throttle situations
  • Faster shifts overall
  • Faster paddle response time
  • Optimised Torque Converter Lockup
  • Torque Limits raised to match tuned engine

Add-ons

  • Speed limiter off
  • Sports display updated
  • Live Gear display

About this job

The results

Power went from 320hp to 380hp, an increase of 60hp or around 19%.

Torque rose from 450Nm to 550Nm (+100Nm), which is what you feel most in everyday driving: stronger pull from low revs and easier overtaking.

What the work involved

A Stage 1 remap is a software calibration for an otherwise standard car. We refine parameters such as boost, fuelling, ignition timing and torque limits within safe margins, so it pulls harder through the mid-range without any hardware changes.

We also tuned the gearbox, raising its torque limits to match the engine and making shifts quicker and more decisive, particularly in Sport and manual modes.

How we carried it out

  • Diagnostic scan for stored faults before any work
  • Stabilised power supply connected while programming
  • Original software read and saved, so the car can be returned to standard
  • Calibration written, then the car checked again afterwards

Thinking about the same for your BMW?

We come to you from our Weston-super-Mare base, across Bristol, Somerset, Gloucestershire, Wiltshire, South Wales and parts of Devon and Dorset. Results depend on the exact car, so we confirm what suits yours before quoting.

BMW M135i tuning See power figures
BMW M135i Stage 1 & Gearbox Tune photographed by MTechTuning
  • Dealer-level diagnostics before and after
  • Fully mobile, at home or work
  • Lifetime software warranty and support
  • 14-day money-back guarantee

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Talk through your vehicle

Find out what your car can do.

Share your registration, mileage and what you would like to improve. We're always online to quote and reply, and we'll confirm what is suitable before booking, then come to you. Fully mobile from our Weston-super-Mare base across Bristol, Somerset, Gloucestershire, Wiltshire, South Wales and parts of Devon and Dorset.

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