BMW M5 4.4 V8 Bi-turbo Stage 1: 462→495hp | DMS Tuned

BMW M5 4.4 V8 Bi-turbo Stage 1: 462→495hp

BMW M5 4.4 V8 Bi-turbo Stage 1: 462hp → 495hp, 650→710Nm. Validated DMS calibration, proven on our dyno — not an off-the-shelf file. From €450. Athens +…

BMW M5 Stage 1: 462 hp → 495 hp

Factory output for the BMW M5 4.4 V8 Bi-turbo is 462 hp and 650 Nm. A Stage 1 remap targets 495 hp and 710 Nm — 33 hp (+7%) and 60 Nm (+9%).

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.

What 33 hp changes on the road

A turbocharged petrol responds to a remap mostly through boost and ignition timing. Taking the 4.4 V8 Bi-turbo from 462 hp to 495 hp, with torque from 650 Nm to 710 Nm, sharpens throttle response and shortens the gap between asking for power and getting it — the car stops feeling like it is thinking about it first.

Gains of this size (+7%) are normal for this kind of engine on pump fuel, with no hardware changes.

What Stage 1 involves on a BMW M5

We read the ECU, log the car as it stands, and put it on the dyno to confirm the 462 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 and boost pressure, then re-run the dyno to verify the 495 hp and 710 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 M5 remap price and booking

Stage 1 for the BMW M5 4.4 V8 Bi-turbo 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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