BMW 5er E39 523i 170
ECU Remapping Midwales
BMW 5er E39 523i 170 in Midwales. 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 523i 170: standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+22 bhp · +13%- Standard170 bhp
- Remapped192 bhp
Torque
+42 Nm · +17%- Standard245 Nm
- Remapped287 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
Standard, the BMW 5er E39 523i 170 makes 170 bhp and 245 Nm. With Remap Experts in Midwales it moves to 192 bhp and 287 Nm, which adds 22 bhp (13%) and 42 Nm (17%).
Figures are indicative stage 1 estimates for a healthy petrol BMW 5 Series; results vary with the condition of the vehicle.
BMW 5er E39 523i 170 remap figures
- Fuel: Petrol
- Standard power: 170 bhp, remapped: 192 bhp (+22 bhp, +13%)
- Standard torque: 245 Nm, remapped: 287 Nm (+42 Nm, +17%)
- Service: stage 1 ECU remap, fully dyno tested
What a remap does for a petrol BMW 5 Series
Petrol engines are remapped by refining fuelling, ignition timing and, on turbocharged engines, boost control. Done carefully this releases performance the manufacturer left in reserve, giving sharper throttle response and a stronger top end.
BMW 5er E39 523i 170 against other 5 Series engines
Among the 30 petrol 5 Series engines we have figures for, the 5er E39 523i 170 ranks 14th for power gain, exactly the 5 Series petrol average.
Across our whole catalogue the average petrol remap adds 27 bhp and 51 Nm, so this engine's 22 bhp and 42 Nm sits below that benchmark.
BMW 5 Series chip tuning in Midwales
This is the Midwales site of the Remap Experts network, serving local drivers. We regularly work with drivers in Llanidloes, Welshpool, Newtown, Machynlleth and Llandrindod Wells and nearby areas of Wales.
You get a fully dyno tested remap, a 30 day money back guarantee and a lifetime software warranty with every job. Get your quote today on 0800 779 7864.
If you are closer to Gwent, Cardiff and Chester, those neighbouring Remap Experts sites can help too.
Ready for ECU remapping on your BMW 5 Series in Midwales?
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