BMW M3 Csl 360 (E46)
ECU Remapping in Portsmouth
BMW M3 Csl 360 (E46) 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 M3 Csl 360 (E46): standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+30 bhp · +8%- Standard360 bhp
- Remapped390 bhp
Torque
+40 Nm · +11%- Standard370 Nm
- Remapped410 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 M3 Csl 360 (E46) from 360 bhp to 390 bhp, and from 370 Nm to 410 Nm of torque. That is 30 bhp (8%) more power and 40 Nm (11%) more torque from software alone, available in Portsmouth.
These are indicative figures for a petrol BMW 3 Series in good health. Your own results depend on the condition of the car.
BMW M3 Csl 360 (E46): remap at a glance
- Fuel: Petrol
- Standard power: 360 bhp, remapped: 390 bhp (+30 bhp, +8%)
- Standard torque: 370 Nm, remapped: 410 Nm (+40 Nm, +11%)
- Service: stage 1 ECU remap, fully dyno tested
What a remap does for a petrol BMW 3 Series
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 M3 Csl 360 (E46) compares
Among the 26 petrol 3 Series engines we have figures for, the M3 Csl 360 (E46) ranks 3rd for power gain, 7 bhp above the 3 Series petrol average of 23 bhp.
Across our whole catalogue the average petrol remap adds 27 bhp and 51 Nm, so this engine's 30 bhp and 40 Nm sits at or above that benchmark.
Remapping your BMW 3 Series in Portsmouth
Remap Experts Portsmouth is part of the UK-wide Remap Experts network. We regularly work with drivers in Hayling Island, Winchester, Southsea, Newport and Gosport and nearby areas of the South East.
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 Southampton, Sussex and Basingstoke, those neighbouring Remap Experts sites can help too.

Want these figures on your BMW M3 Csl 360 (E46)?
Send your details and a specialist will confirm what is possible for your engine.
Included
What we can do for your BMW 3 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 3 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