BHP+10 hp (9%)
Standard
115 hp
Tuned
125 hp
Torque+15 Nm (9%)
Standard
170 Nm
Tuned
185 Nm
Suitability
Moderate (4/10)Gains Profile
BalancedHeadroom
LowVauxhall Astra 1.8i 16v 115hp ECU Remapping
Considering an ECU remap for your Vauxhall Astra 1.8i 16v 115hp? A Stage 1 remap can take this (G) - 1998 - 2004 petrol engine from 115 BHP to 125 BHP and from 170 Nm to 185 Nm of torque (naturally aspirated). This engine scores 4/10 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
- 33rdof 42 Vauxhall Astra engines by power gain
- 2%of the 9,842 engines we hold gain data for see a smaller power increase
- 3%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The Vauxhall Astra 1.8i 16v 115hp is a 1.8L naturally aspirated petrol engine producing 115 BHP and 170 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 125 BHP and 185 Nm — a gain of around 10 BHP (9%) and 15 Nm (9%).
This engine has limited 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 limited, based on the percentage gain available from the factory output.
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.
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
!Naturally aspirated engine: gains are usually limited; results vary widely.
Other Astra (G) - 1998 - 2004 Engines
| Engine | BHP | Gain | Torque | Gain |
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