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BMW · Stage 1

BMW 420d Stage 1

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

Published vehicle figures

Stock

184hp

380Nm

Stage 1

220hp

440Nm

Difference

+36hp

+60Nm

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

Add-ons

  • Speed limiter off

Mobile job in Wales, customer had just purchased his new BMW. Now definitely satisfied with the power bump.

Get in touch @mtechtuning

07961 278817

Mtechtuninguk@gmail.com

www.mtechtuning.co.uk.

^Free instant power quote on^

About this job

The results

This BMW 420d now makes 220hp, up from 184hp as standard: 36hp more, an increase of around 20%.

Torque rose from 380Nm to 440Nm (+60Nm), which is what you feel most in everyday driving: stronger pull from low revs and easier overtaking.

What the work involved

Stage 1 is calibrated for a car with standard hardware. By refining boost, fuelling, timing and torque requests within the engine's safe limits, it delivers stronger, smoother acceleration and sharper throttle response.

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 320d tuning See power figures
BMW 420d Stage 1 photographed by MTechTuning

Video from this job

  • Dealer-level diagnostics before and after
  • Fully mobile, at home or work
  • Lifetime software warranty and support
  • 14-day money-back guarantee

More recent jobs

More BMW work, with published figures.

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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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