BMW M5 E39 - 1995 - 2003 5.0 V8 400hp

Real standard and upgraded performance figures for the 5.0 V8 400hp engine in the BMW M5 E39 - 1995 - 2003.

The BMW M5 E39 - 1995 - 2003 5.0 V8 400hp is one of the engines we work on regularly — here's what a stage remap typically changes for it.

Horsepower (HP)Torque (Nm)
Standard400500
Stage 1430535
Stage 2445552
Make
BMW
Model
M5
Generation
E39 - 1995 - 2003
Engine
5.0 V8 400hp
Fuel type
Petrol

Frequently asked questions

Is Stage 1 tuning safe for the BMW M5 E39 - 1995 - 2003 5.0 V8 400hp?

Yes — Stage 1 for this engine is a software-only remap calibrated to stay within its stock mechanical limits (turbo, clutch, fueling), so no hardware changes are required.

How much more power does the 5.0 V8 400hp make after tuning?

Standard output is 400 HP / 500 Nm; Stage 1 on this engine typically reaches 430 HP / 535 Nm. Exact results can vary slightly with fuel quality and vehicle condition.

How long does a BMW M5 E39 - 1995 - 2003 5.0 V8 400hp remap take?

Once your original file is uploaded through the member panel, most requests for this engine are completed within a few hours.

Can the 5.0 V8 400hp be reverted to its original file?

Yes — we keep the original file on record for the request, so the ECU can be put back to stock at any time.