BMW M3 E90 420
Engine Remapping in Bath
BMW M3 E90 420 in Bath. 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 E90 420: standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+30 bhp · +7%- Standard420 bhp
- Remapped450 bhp
Torque
+43 Nm · +11%- Standard400 Nm
- Remapped443 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 E90 420 from 420 bhp to 450 bhp, and from 400 Nm to 443 Nm of torque. That is 30 bhp (7%) more power and 43 Nm (11%) more torque from software alone, available in Bath.
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 E90 420 power and torque after remapping
- Fuel: Petrol
- Standard power: 420 bhp, remapped: 450 bhp (+30 bhp, +7%)
- Standard torque: 400 Nm, remapped: 443 Nm (+43 Nm, +11%)
- Service: stage 1 ECU remap, fully dyno tested
Petrol BMW 3 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 M3 E90 420 compares
Among the 26 petrol 3 Series engines we have figures for, the M3 E90 420 ranks 4th 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 43 Nm sits at or above that benchmark.
BMW 3 Series vehicle tuning in Bath
Remap Experts has a dedicated Bath site, so you deal with a local team backed by a national network. We regularly work with drivers in Midsomer Norton, Westbury, Swindon, Radstock and Melksham and nearby areas of the South West.
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 Bristol, Somerset and Southampton, those neighbouring Remap Experts sites can help too.
Get a quote for your BMW M3 E90 420
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 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