Stage 2 file Instant download
BMW E39 520D Stage 2 file Bosch HW 0281001445 · SW 7786887
2002, Turbo diesel, 100 kW (136 hp)
Stock 136 hp → Stage 1 165 hp +29 hp +55 Nm
This is a Stage 2 tune of the factory calibration of the 2002 BMW E39 520D (100 kW, 136 hp), for its Bosch ECU with hardware 0281001445 and software 7786887. Stage 2 is written for a car with supporting parts fitted; if yours differ from the usual build, we match the file to them.
Check your read
Not sure it fits? Drop your read here and we compare it with this file, number by number. It stays private.
- Read the file on your computer
- Look for it in our files
- Upload it, kept private
- Compare it with this file
Every file for this software
The original and the tunes we sell for software 7786887, each made from the same read.
| File | Price | Buy |
|---|---|---|
| Original | £6.99 | Add to cart |
| Stage 1 · version A | £21.99 | Add to cart |
| Stage 1 · version B | £21.99 | Add to cart |
| Stage 2 · version A | £24.99 | Add to cart |
| Stage 2 · version B this page | £24.99 | Add to cart |
Power and torque
520D, diesel
| Power | Torque | Gain | |
|---|---|---|---|
| Stock | 136 hp | 280 Nm | Factory |
| Stage 1 | 165 hp | 335 Nm | +29 hp, +55 Nm |
Typical crank figures for a healthy 520D, shown only for the files on sale here. Results depend on the car's condition, fuel and parts.
About this file
Stage 2 on the 520D goes further than Stage 1 and expects supporting parts: a freer exhaust or downpipe, a bigger intercooler and a clutch rated for the torque. Fit them first; on a standard car a Stage 2 file asks more than the parts give.
The BMW E39 520D carries the 520D engine, 136 hp and 280 Nm from the factory. On this engine, Stage 1 usually gives about 165 hp and 335 Nm (+29 hp, +55 Nm). Typical figures for a healthy engine: your car's own result depends on its condition, fuel and parts.
For software 7786887 of the BMW E39 520D we sell the original, Stage 1 · version A, Stage 1 · version B, Stage 2 · version A and Stage 2 · version B, each made from the same original read. Every file downloads straight after payment.
The Bosch ECU in this car is read and written over OBD and on the bench, with tools such as Alientech Kess V2, CMD Flash and Dimsport New Genius. Keep your own read: compare its hardware and software numbers with the ones on this page before you write the file.
DPF off, EGR off, AdBlue (SCR) off, DTC off, speed limiter (Vmax) off and swirl flaps off can be added to this file on request, for off-road and competition use: send us your read through our file service and our engineers add them (any file £50, from £30 in packs).
Hardware 0281001445 is the number on the Bosch ECU's label. Software 7786887 is the calibration inside it: a read with hardware 0281001445 and another software number needs a different file.
How the Bosch ECU is read
OBD Bench
Read and written with Alientech Kess V2, CMD Flash and Dimsport New Genius.
- Read the ECU and keep the read: it is your way back.
- Match the numbers: hardware 0281001445 and software 7786887.
- Pay and download: the file is in your account straight away.
- Write it back the way you read it. Not right for your car? We correct it free.
Before you write the file
- A battery charger on the car: a write takes minutes and the voltage must not drop.
- Your own read saved twice, on two different drives: it is your way back.
- Your read shows hardware 0281001445 and software 7786887, the same as this file.
- Fault codes read and noted before the write, and cleared after it.
- The same tool and connection (OBD and bench) you read the ECU with.
Questions
Which ECU does this BMW E39 520D Stage 2 file fit?
A Bosch ECU with hardware 0281001445 and software 7786887. Check those numbers in your read before you write it; another software number needs another file, which our engineers can build from your read.
How is the Bosch ECU read and written?
Over OBD and on the bench, with tools such as Alientech Kess V2, CMD Flash and Dimsport New Genius. Write the file back the same way you read the ECU, and keep your original read.
What does Stage 1 give on the BMW E39 520D?
Usually about 165 hp and 335 Nm against 136 hp and 280 Nm stock (+29 hp, +55 Nm). Typical for a healthy engine, never a promise for one car.
Can you add DPF off and EGR off to the Bosch ECU file?
Yes, on request, for off-road and competition use: DPF off, EGR off, AdBlue (SCR) off, DTC off, speed limiter (Vmax) off and swirl flaps off. Send your read through our file service and an engineer builds it (any file £50, from £30 in packs). The buyer is responsible for using it where the law allows.
What exactly is in the download?
A BIN file of 32 KB, ready to write. Write it with the same tool and the same connection you read the ECU with.
Does software 7786887 fit other cars?
We also sell this software for the Land Rover Range Rover 2.5 TD and BMW E46 320D. The hardware number on your ECU decides whether the same file fits: match it before you write.
How do I get the file after paying?
It is in your account as an instant download straight after payment by card, Apple Pay or Google Pay: the BIN file, ready to write.
What if the file does not fit my car?
Send us your read and we correct it free, as many times as it takes. Questions before you buy are answered by a tuner on WhatsApp.