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BMW · Stage 1

BMW 340i Stage 1 & Gearbox Tune

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

Published vehicle figures

Stock

326hp

450Nm

Stage 1

420hp

600Nm

Difference

+94hp

+150Nm

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

BMW 340i Stage 1 & Gearbox Tune

This BMW 340i went from 326hp and 450Nm to 420hp and 600Nm with our Stage 1 calibration, a gain of 94hp and 150Nm, with the ZF gearbox tuned to match.

Gearbox tune

  • Optimised D and S shift points for better acceleration at part and full throttle
  • Faster shifts overall
  • Faster paddle response
  • Optimised torque converter lockup
  • Torque limits raised to match the tuned engine
  • Gear display activation

Add-ons

  • Speed limiter solution
  • Sports display updated

Advanced dealer-level diagnostics were included before and after the work.

Why tune the gearbox on a 340i?

With 600Nm going through it, a gearbox calibration keeps shifts quick and torque limits matched. We tune 340is at your home or workplace across Bristol, North Somerset, Somerset and South Wales.

About this job

The results

Power went from 326hp to 420hp, an increase of 94hp or around 29%.

Torque rose from 450Nm to 600Nm (+150Nm), 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.

The gearbox was tuned as well. A gearbox calibration raises the transmission's torque limits to suit the engine and can sharpen shifts and response, so both work together as one package.

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 340i tuning Check your gains
BMW 340i 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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