BMW 5er E39 523i 170
Chip Tuning Coventry
BMW 5er E39 523i 170 in Coventry. 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
The BMW 5er E39 523i 170 produces 170 bhp and 245 Nm of torque as standard. After a stage 1 ECU remap in Coventry, our figures show 192 bhp and 287 Nm: a gain of 22 bhp (13%) and 42 Nm (17%).
Treat the numbers as a guide: they are stage 1 estimates for a petrol BMW 5 Series in sound condition, and individual cars differ.
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
Petrol BMW 5 Series: what changes with a remap
On a petrol car the ECU controls fuelling, spark timing and any turbo boost. A remap re-calibrates those maps within safe limits, so the car responds more eagerly and pulls harder through the rev range.
BMW 5er E39 523i 170 against other 5 Series engines
Of the 30 petrol 5 Series engines in our data, this one comes 14th for power gain, which is 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 ECU remapping in Coventry
Whether you live in Coventry or nearby, the Coventry Remap Experts site is your local route to a quote. We regularly work with drivers in Henley Green, Radford, Potters Green, Keresley and Edgwick and nearby areas of the West Midlands.
Every remap is fully dyno tested and comes with a 30 day money back guarantee and a lifetime software warranty. Call 0800 779 7864 for a quote.
If you are closer to Birmingham, Leicester and Northampton, those neighbouring Remap Experts sites can help too.
Get a quote for your BMW 5er E39 523i 170
Tell us about your car and we will come back with a quote by SMS or phone.
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