Considering an ECU remap for your Vauxhall Astra 1.7 CDTi 100hp? A Stage 1 remap can take this (H) - 2004 - 2011 diesel engine from 100 BHP to 130 BHP and from 240 Nm to 295 Nm of torque (turbocharged). This engine scores 7.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Vauxhall Astra can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The Vauxhall Astra 1.7 CDTi 100hp is a 1.7L turbocharged diesel engine producing 100 BHP and 240 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 130 BHP and 295 Nm — a gain of around 30 BHP (30%) and 55 Nm (23%).
This engine scores highly for remap suitability, with gains weighted towards peak power — the improvement is most noticeable at higher RPM. The tuning headroom is classified as high, based on the percentage gain available from the factory output.
Considerations: Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
Fuel economy note: possible improvement with conservative driving.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
| Engine | BHP | Gain |
|---|
| Torque |
|---|
| Gain |
|---|
| Score |
|---|
| 1.7 CDTi 80hp | 80 → 105 | +25 | 170 → 230 | +60 | Excellent (8/10) |
| 1.7 CDTi 110hp | 110 → 150 | +40 | 260 → 330 | +70 | Excellent (8/10) |
| 1.7 CDTi 125hp | 125 → 150 | +25 | 280 → 330 | +50 | Good (7/10) |
Get a personalised remap quote for your Vauxhall Astra. We'll connect you with a trusted professional in your area.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.
We recommend discussing your specific vehicle with a qualified remap professional before proceeding.
