BMW 5er E39 520d 136
ECU Remapping in Devon
BMW 5er E39 520d 136 in Devon. Standard and remapped figures for this exact engine.

- Fully dyno tested remaps
- 30 day money back guarantee
- Lifetime software warranty
- UK-wide local network
Remap stats
BMW 5er E39 520d 136: standard vs remapped
Diesel engine. Indicative stage 1 figures, fully dyno tested.
Power
+37 bhp · +27%- Standard136 bhp
- Remapped173 bhp
Torque
+83 Nm · +30%- Standard280 Nm
- Remapped363 Nm
Tuning figures are indicative estimates, not guaranteed results. Actual results depend on the condition of the vehicle.
Prices from £130
Fully dyno tested | 30 day money back guarantee | Lifetime software warranty
A stage 1 remap lifts the BMW 5er E39 520d 136 from 136 bhp to 173 bhp, and from 280 Nm to 363 Nm of torque. That is 37 bhp (27%) more power and 83 Nm (30%) more torque from software alone, available in Devon.
These are indicative figures for a diesel BMW 5 Series in good health. Your own results depend on the condition of the car.
BMW 5er E39 520d 136: remap at a glance
- Fuel: Diesel
- Standard power: 136 bhp, remapped: 173 bhp (+37 bhp, +27%)
- Standard torque: 280 Nm, remapped: 363 Nm (+83 Nm, +30%)
- Service: stage 1 ECU remap, fully dyno tested
How ECU remapping works on a diesel BMW 5 Series
On a diesel the ECU decides how much fuel is injected and how hard the turbo works. A remap adjusts those calibrations within safe limits, so the gains show up mainly as extra torque low in the rev range and smoother, more responsive pull.
How the BMW 5er E39 520d 136 compares
Of the 17 diesel 5 Series engines in our data, this one comes 4th for power gain, which is exactly the 5 Series diesel average.
Across our whole catalogue the average diesel remap adds 34 bhp and 73 Nm, so this engine's 37 bhp and 83 Nm sits at or above that benchmark.
Book vehicle tuning for your BMW 5 Series in Devon
Remap Experts Devon is part of the UK-wide Remap Experts network. We regularly work with drivers in Paignton, Tiverton, Teignmouth, Plymouth and Newton Abbot and nearby areas of the South West.
All our remaps are fully dyno tested, backed by a 30 day money back guarantee and covered by a lifetime software warranty. Request a quote online or call 0800 779 7864.
If you are closer to Cornwall, Somerset and Bristol, those neighbouring Remap Experts sites can help too.

Want these figures on your BMW 5er E39 520d 136?
Send your details and a specialist will confirm what is possible for your engine.
Included
What we can do for your BMW 5 Series
Stage 1 ECU remap
Add power and torque and improve driveability. Software only, tailored to your engine.
ECU repair and testing
Is your engine control unit playing up? We can arrange testing and repair, and source replacement ECUs.
DPF and EGR fault repair
Persistent DPF or EGR errors diagnosed and resolved in accordance with all current road-legal standards.
Engine carbon cleaning
Fault finding and carbon cleaning for the inside of your engine, typically completed in a couple of hours.
Same model
Other 5 Series engines
From quote to remapped in four steps
No jargon and no pressure. Here is exactly what happens.
- 01
Find your vehicle
Choose your make, model and engine to see the standard and remapped power and torque for your car.
- 02
Request a quote
Send your details and we contact you by SMS or call back with a quote. No obligation.
- 03
Book with your local site
Your local Remap Experts site arranges the remap and answers any questions about your car.
- 04
Remapped and dyno tested
Your remap is fully dyno tested, with a 30 day money back guarantee and a lifetime software warranty.
Everything you need to know
Plain-English guides to how remapping works, what it does and what to check first.
- 6 min read
What is ECU remapping?
The engine control unit, what a remap changes, and who it suits.
Read guide - 5 min read
The benefits of ECU remapping
More torque, better driveability and the potential for better economy.
Read guide - 6 min read
How ECU remapping works, step by step
From reading the original software to the dyno test.
Read guide