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BMW 118d F20: Stage 1 Custom Dyno Tune

5 July 2026 · DC Remapping UK

Another BMW F-Series diesel refined properly. This BMW 118d 2.0 — the B47 turbo diesel — came in for our Stage 1 custom dyno calibration, developed live on our 4WD linked V-Tech dyno.

BMW 118d F20 on the 4WD linked dyno at DC Remapping UK
On the rollers — every map is developed live on our 4WD linked V-Tech dyno.

The numbers

It arrived producing 150bhp and 328Nm on our baseline run. After a bespoke calibration written for this exact car, it left making 193bhp and 423Nm — measured on the rollers, not estimated:

MeasurementStockDC Stage 1 Custom
Engine power150.3 hp @ 3,879rpm193.7 hp @ 3,742rpm
Engine torque328 Nm @ 2,386rpm423 Nm @ 2,347rpm
Wheel power127.6 hp @ 3,537rpm170.9 hp @ 3,742rpm
BMW 118d F20 dyno graph — stock vs DC Stage 1 custom
The before-and-after printout every customer takes away — stock in red, tuned in blue.

What the transformation feels like

That’s +43bhp and +95Nm, and the focus here was everyday drivability. Stronger mid-range torque, sharper throttle response and a far more responsive feel in normal driving — the 118d finally pulls the way it always should have, without any drama.

“Unbelievable. I will recommend you every time.”

— 118d owner, verified customer

BMW 118d F20 rear view strapped to the dyno at DC Remapping UK
Strapped down for back-to-back verification runs.

How it was done

All work was carried out in-house on our V-Tech 4WD linked dyno, with a full health check before any tuning and live data logging throughout. The calibration was written for this exact car — its ECU variant, its fuel, its condition. No generic files. No shortcuts. Just precision B47 tuning done properly, with the original software backed up so it’s fully reversible.

Your 118d could be next

118d, 120d or another F-Series diesel — we can transform how it drives. See our BMW 20d tuning page for figures, check your car’s gains, or get a free quote and we’ll book you in.

Ready When You Are

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Specialist BMW & VAG tuning, dyno-proven in Warrington. Tell us your car and we’ll send your gains and pricing.

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