BMW 5er E34 M5 3.8 340
ECU Remapping
BMW 5er E34 M5 3.8 340. 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 E34 M5 3.8 340: standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+22 bhp · +6%- Standard340 bhp
- Remapped362 bhp
Torque
+47 Nm · +12%- Standard400 Nm
- Remapped447 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
ECU remapping for the BMW 5er E34 M5 3.8 340 takes it from 340 to 362 bhp and from 400 to 447 Nm in our stage 1 figures: +22 bhp (6%) and +47 Nm (12%).
The figures above are estimates for a standard, well-maintained BMW 5 Series petrol; they are not a guarantee of any particular result.
BMW 5er E34 M5 3.8 340 remap figures
- Fuel: Petrol
- Standard power: 340 bhp, remapped: 362 bhp (+22 bhp, +6%)
- Standard torque: 400 Nm, remapped: 447 Nm (+47 Nm, +12%)
- Service: stage 1 ECU remap, fully dyno tested
Petrol BMW 5 Series: what changes with a remap
Factory petrol calibrations leave margin for poor fuel and hot climates. A remap tunes the ignition, fuelling and boost maps to make better use of that margin, which shows up as livelier throttle response and stronger acceleration.
How the BMW 5er E34 M5 3.8 340 compares
Among the 30 petrol 5 Series engines we have figures for, the 5er E34 M5 3.8 340 ranks 13th 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 47 Nm sits below that benchmark.
Remapping your BMW 5 Series across the UK
Remap Experts is a UK network of local remapping sites. Use Find a Local Tuner to reach your nearest site and get an exact quote.
Each remap is dyno tested before it is signed off, and is protected by a 30 day money back guarantee and a lifetime software warranty. Ask for a quote online or by phone.
Ready for ECU remapping on your BMW 5 Series?
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