BMW 5 Series E39 1995 - 2003
Power
245 HP / 180 kW
Fuel
Petrol
Engine code
N20B20O0
Version
528i 6MT
Model year(s)
1995–2003
Control unit
Bosch MEVD17.2.9ECU
Protocols
- OBD2997
- Bench1355
- Boot679
- DTC5000
- DynoDrive5001
- DATA_OWNER5032
Live ECU tuning for the BMW 5 Series, with measured power and torque gains, a dyno preview, and the supported file options grouped into one focused page.
| Stock | Tuned | Gain | |
|---|---|---|---|
| Power (HP) | 245 | 259 | +14 (+6%) |
| Torque (Nm) | 345 | 370 | +25 (+7%) |
Available tuning options
Performance 2
Tune
Towing | PowerPops and Bangs You must disable and remove the Catalytic convertor from the vehicle or it may fail and prevent any audiable pops being heard.
Emissions & anti-pollution 6
EGR off petrol
SAI (secondary air injection)
OPF off We take no responsibility for legal actions as a result of disabling a OPF system, this may be illegal in your country. You must perform a forced regeneration or reset all OPF levels before writing the tuned file.
Decat P0420 will be disabled and P0430 if dual cat.
DTC off You must clear codes before writing tuned file. Not required if DPF/EGR related and DPF/EGR selected.
NOx sensor off
Driveability & comfort 5
Speed limit raised We take no responsibility for legal actions as a result of a raised speed limiter, this may be illegal in your country.
Cylinder on Demand off
Hot start / Cold start fix
Start / Stop system off
Swirl / Intake Flaps off
Services, files & hardware 6
Clone ECU Must supply reads of original and new ecu's. Must bench read.
High flow turbo charger You must also select towing or power tune.
Send us your ECU Includes standard bench fee processing for 1 ECU and NZ return freight. Include a send in ECU form fully filled out with your ECU.
Return file to original
Immo off (If possible)
Checksum correction
Dyno chart
Original HP
Tuned HP
Original Torque
Tuned Torque
Original HP
Tuned HP
* This chart should be considered a visual representation only, actual values will vary.
Installation and process
Choose the tuning package that fits your goals, confirm the vehicle and ECU, and request your files. AltTune then guides the read, write, and verification steps for your selected vehicle — whether handled remotely with a supported flash tool or on the bench.
Support, safety, and trust
Vehicle condition, maintenance history, fuel quality, and intended use all affect results. We only publish gains we can support for the listed configuration, and we ask that you confirm suitability for your vehicle and application before ordering.
Frequently asked questions
01
Is the BMW 5 Series E39 1995 - 2003 supported?
This page is generated for an active vehicle in the AltTune catalogue, so it represents a currently supported tuning entry. If your exact ECU differs, contact us to confirm before ordering.
02
What options are available for this vehicle?
The resolved options for this vehicle include Clone ECU, EGR off petrol, High flow turbo charger, Send us your ECU, SAI (secondary air injection), Tune. The exact list depends on the vehicle type, fuel, and supported protocols.
03
What gains can I expect?
This vehicle shows gains of up to +14 HP and +25 Nm over the factory figures. Real-world results vary with condition and fuel.
