BMW 118i 129
ECU Remapping Portsmouth
BMW 118i 129 in Portsmouth. 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 118i 129: standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+20 bhp · +16%- Standard129 bhp
- Remapped149 bhp
Torque
+35 Nm · +19%- Standard180 Nm
- Remapped215 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 118i 129 makes 129 bhp and 180 Nm. With Remap Experts in Portsmouth it moves to 149 bhp and 215 Nm, which adds 20 bhp (16%) and 35 Nm (19%).
Figures are indicative stage 1 estimates for a healthy petrol BMW 1 Series; results vary with the condition of the vehicle.
BMW 118i 129: remap at a glance
- Fuel: Petrol
- Standard power: 129 bhp, remapped: 149 bhp (+20 bhp, +16%)
- Standard torque: 180 Nm, remapped: 215 Nm (+35 Nm, +19%)
- Service: stage 1 ECU remap, fully dyno tested
What a remap does for a petrol BMW 1 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 118i 129 against other 1 Series engines
Ranked by power gain against the other petrol 1 Series engines (9 in total), the 118i 129 is 7th, 5 bhp below the 1 Series petrol average of 25 bhp.
Across our whole catalogue the average petrol remap adds 27 bhp and 51 Nm, so this engine's 20 bhp and 35 Nm sits below that benchmark.
Remapping your BMW 1 Series in Portsmouth
Whether you live in Portsmouth or nearby, the Portsmouth Remap Experts site is your local route to a quote. We regularly work with drivers in Hayling Island, Winchester, Southsea, Newport and Gosport and nearby areas of the South East.
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 Southampton, Sussex and Basingstoke, those neighbouring Remap Experts sites can help too.

Ready for ECU remapping on your BMW 1 Series in Portsmouth?
Send your details and a specialist will confirm what is possible for your engine.
Included
What we can do for your BMW 1 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.
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