BMW M5 5.0 V8 400bhp tuning file
E39 (1995–2003) · Petrol · ECU: Siemens/Continental MSS52
Stage 1 remap: +30 bhp & +35 Nm
ECU
Read methods
Available solutions
Upload the original read of your BMW M5 5.0 V8 400bhp and we'll return a Stage 1 tuning file worth 430 bhp and 535 Nm – up from 400 bhp and 500 Nm, an increase of +30 bhp (8%) and +35 Nm. Every file is checked by a calibrator on the Siemens/Continental MSS52 before release, and DECAT, DTC Removal, FLAPS, Pop & Bang Crackle map can be combined in one upload.
Who is this remap for?
Naturally aspirated petrol engines gain less than turbo engines, but a remap still improves throttle response and smooths out flat spots in the power delivery. 400 → 430 bhp equals roughly 298 → 321 kW.
Figures are guide values from our rolling road and comparable vehicles. Results depend on the vehicle's condition, hardware and fuel quality. Remapping in the UK: let your insurer know about the modification. DPF, EGR and AdBlue solutions are supplied for off-road and motorsport use only and are not legal for use on UK roads.
Engine specification
| Fuel type | Petrol |
| Engine size | 4941 CC |
| Compression ratio | 11.0 : 1 |
| Bore × stroke | 94.0 X 89.0 mm |
| Engine code | 508S1 |
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