BMW 4 Series GC 418d Stage 1: 150→190hp | DMS Tuned

BMW 4 Series GC 418d Stage 1: 150→190hp

BMW 4 Series GC 418d Stage 1: 150hp → 190hp, 320→400Nm. Validated DMS calibration, proven on our dyno — not an off-the-shelf file. From €450. Athens +…

BMW 4 Series GC Stage 1: 150 hp → 190 hp

Factory output for the BMW 4 Series GC 418d is 150 hp and 320 Nm. A Stage 1 remap targets 190 hp and 400 Nm — 40 hp (+27%) and 80 Nm (+25%).

Those are the figures we work to on this engine. They are a starting point, not a promise: the number we hand back is the one your car makes on our dyno, measured before and after on the same day, in the same conditions.

Where the 80 Nm shows up

On a diesel the useful change is torque, not peak power. Going from 320 Nm to 400 Nm fills in the mid-range, which is where a BMW 4 Series GC actually spends its time — pulling from 1,800 to 3,000 rpm in a high gear, overtaking without dropping two gears, towing or carrying weight without the engine falling on its face.

Peak power moves too, 150 hp to 190 hp, but you will feel the 80 Nm far more often than the 40 hp.

What Stage 1 involves on a BMW 4 Series GC

We read the ECU, log the car as it stands, and put it on the dyno to confirm the 150 hp baseline — a tired or faulty engine gets diagnosed before it gets mapped, not after.

The calibration is written for your car, not pulled from a file library. We adjust fuelling, ignition timing, injection timing and boost, then re-run the dyno to verify the 190 hp and 400 Nm figure and check knock, lambda and temperatures under load.

Turnaround is same-day for most cars. Stock file is archived, so the car can go back to standard whenever you want.

BMW 4 Series GC remap price and booking

Stage 1 for the BMW 4 Series GC 418d starts at €450, including the dyno runs before and after and the stock-file archive.

We work from Leoforos Karamanli 127, Artemida 19016, east of Athens, and tune remotely across Europe where the ECU allows it. WhatsApp +30 697 728 8810 with your registration for a straight answer on your car.

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