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BMW · Stage 1

BMW F32 420i Stage 1 with Pops & Bangs

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

Published vehicle figures

Stock

184hp

270Nm

Stage 1

260hp

420Nm

Difference

+76hp

+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 F32 420i Stage 1 with Pops & Bangs

This BMW F32 420i went from 184hp and 270Nm to 260hp and 420Nm with our Stage 1 calibration, a gain of 76hp and 150Nm.

Transformed by Stage 1

The 420i made really strong gains from Stage 1 alone, totally transforming the car. It now has much more character too, with pops and bangs added.

Add-ons

  • Speed limiter solution
  • Pops and bangs
  • Anti-lag

How much power does a remapped 420i make?

This one made 260hp and 420Nm on Stage 1. We tune 4 Series BMWs at your home or workplace across Bristol, North Somerset, Somerset and South Wales.

About this job

The results

Power went from 184hp to 260hp, an increase of 76hp or around 41%.

Torque rose from 270Nm to 420Nm (+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.

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 tuning Check your gains
BMW F32 420i Stage 1 with Pops & Bangs 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

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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