BMW 5er E39 523i 170
Engine Remapping in Belfast
BMW 5er E39 523i 170 in Belfast. 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
A stage 1 remap lifts the BMW 5er E39 523i 170 from 170 bhp to 192 bhp, and from 245 Nm to 287 Nm of torque. That is 22 bhp (13%) more power and 42 Nm (17%) more torque from software alone, available in Belfast.
These are indicative figures for a petrol BMW 5 Series in good health. Your own results depend on the condition of the car.
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
A petrol remap re-works the engine management calibration: air-fuel ratio, ignition advance and boost where fitted. The result is more power and a more immediate throttle, delivered by software rather than hardware changes.
How the BMW 5er E39 523i 170 compares
Ranked by power gain against the other petrol 5 Series engines (30 in total), the 5er E39 523i 170 is 14th, 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.
Book vehicle tuning for your BMW 5 Series in Belfast
Remap Experts has a dedicated Belfast site, so you deal with a local team backed by a national network. We regularly work with drivers in Holywood, Newtownabbey, Millisle, Lisburn and Dunmurry and nearby areas of Northern Ireland.
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 Glasgow, Scotland and Carlisle, those neighbouring Remap Experts sites can help too.
Ready for engine remapping on your BMW 5 Series in Belfast?
Send your registration and we will confirm the exact remap, the price and the next available slot.
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