BHP+30 hp (25%)
Standard
120 hp
Tuned
150 hp
Torque+80 Nm (29%)
Standard
280 Nm
Tuned
360 Nm
Suitability
Good (7.5/10)Gains Profile
BalancedHeadroom
HighVauxhall Astra 1.9 CDTi 120hp ECU Remapping
Considering an ECU remap for your Vauxhall Astra 1.9 CDTi 120hp? A Stage 1 remap can take this (H) - 2004 - 2009 diesel engine from 120 BHP to 150 BHP and from 280 Nm to 360 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.
How this engine compares
- 12thof 42 Vauxhall Astra engines by power gain
- 39%of the 9,842 engines we hold gain data for see a smaller power increase
- 64%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The Vauxhall Astra 1.9 CDTi 120hp is a 1.9L turbocharged diesel engine producing 120 BHP and 280 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 150 BHP and 360 Nm — a gain of around 30 BHP (25%) and 80 Nm (29%).
This engine scores highly for remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. The tuning headroom is classified as high, based on the percentage gain available from the factory output.
Considerations: Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.. 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.
Considerations
!Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.
!Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.