Rover 420 Sdi 105
ECU Remapping Chester
Rover 420 Sdi 105 in Chester. 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
Rover 420 Sdi 105: standard vs remapped
Diesel engine. Indicative stage 1 figures, fully dyno tested.
Power
+35 bhp · +33%- Standard105 bhp
- Remapped140 bhp
Torque
+70 Nm · +33%- Standard210 Nm
- Remapped280 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
What does a remap do for the Rover 420 Sdi 105? Our figures show power up from 105 to 140 bhp (+33%) and torque up from 210 to 280 Nm (+33%), a stage 1 result you can book in Chester.
Treat the numbers as a guide: they are stage 1 estimates for a diesel Rover 420 in sound condition, and individual cars differ.
Rover 420 Sdi 105: remap at a glance
- Fuel: Diesel
- Standard power: 105 bhp, remapped: 140 bhp (+35 bhp, +33%)
- Standard torque: 210 Nm, remapped: 280 Nm (+70 Nm, +33%)
- Service: stage 1 ECU remap, fully dyno tested
What a remap does for a diesel Rover 420
Modern diesels are held back by conservative factory calibrations. A remap updates the fuel and boost maps stored in the ECU, which is why drivers notice stronger acceleration from low revs and less need to change down on hills or when loaded.
Remapping your Rover 420 in Chester
This is the Chester site of the Remap Experts network, serving local drivers. We regularly work with drivers in Nantwich, Sandbach, Runcorn, Northwich and Knutsford and nearby areas of the North West.
Every remap is fully dyno tested and comes with a 30 day money back guarantee and a lifetime software warranty. Call 0800 779 7864 for a quote.
If you are closer to Cheshire, Merseyside and Liverpool, those neighbouring Remap Experts sites can help too.

Get a quote for your Rover 420 Sdi 105
Send your registration and we will confirm the exact remap, the price and the next available slot.
Included
What we can do for your Rover 420
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