Opel Astra III 1.7 CDTi 100
Engine Tuning in Portsmouth
Opel Astra III 1.7 CDTi 100 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
Opel Astra III 1.7 CDTi 100: standard vs remapped
Diesel engine. Indicative stage 1 figures, fully dyno tested.
Power
+30 bhp · +30%- Standard100 bhp
- Remapped130 bhp
Torque
+60 Nm · +25%- Standard240 Nm
- Remapped300 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
Engine tuning for the Opel Astra III 1.7 CDTi 100 in Portsmouth takes it from 100 to 130 bhp and from 240 to 300 Nm in our stage 1 figures: +30 bhp (30%) and +60 Nm (25%).
The figures above are estimates for a standard, well-maintained Opel Astra III diesel; they are not a guarantee of any particular result.
Opel Astra III 1.7 CDTi 100 remap figures
- Fuel: Diesel
- Standard power: 100 bhp, remapped: 130 bhp (+30 bhp, +30%)
- Standard torque: 240 Nm, remapped: 300 Nm (+60 Nm, +25%)
- Service: stage 1 ECU remap, fully dyno tested
Diesel Opel Astra III: what changes with a remap
Diesel engines respond strongly to remapping because the ECU controls injection quantity, injection timing and turbo boost pressure. Re-calibrating those maps typically brings the biggest improvement in mid-range torque, which is what you feel when overtaking or towing.
How the Opel Astra III 1.7 CDTi 100 compares
Among the 6 diesel Astra III engines we have figures for, the 1.7 CDTi 100 ranks 5th for power gain, 1 bhp below the Astra III diesel average of 31 bhp.
Across our whole catalogue the average diesel remap adds 34 bhp and 73 Nm, so this engine's 30 bhp and 60 Nm sits below that benchmark.
Opel Astra III engine remapping in Portsmouth
Based around Portsmouth, our team serves local drivers as part of the nationwide Remap Experts network. We regularly work with drivers in Hayling Island, Winchester, Southsea, Newport and Gosport and nearby areas of the South East.
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.
If you are closer to Southampton, Sussex and Basingstoke, those neighbouring Remap Experts sites can help too.

Get a quote for your Opel Astra III 1.7 CDTi 100
Send your details and a specialist will confirm what is possible for your engine.
Included
What we can do for your Opel Astra III
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