The standard power of your Opel Astra 1.7 CDTi 80hp vehicle is factory 80 hp / 170 nm. After Opel Astra chip tuning custom vehicle software, your vehicle will gain +25 hp / +60 nm additional power and reach a total power of 105 hp / 230 nm. Since there will be no change in the exhaust emission values of your vehicle, there will be no smoke in your vehicle.