The standard power of your Peugeot 308 1.6 BlueHDI 120hp vehicle is factory 120 hp / 300 nm. After Peugeot 308 chip tuning custom vehicle software, your vehicle will gain +20 hp / +50 nm additional power and reach a total power of 140 hp / 350 nm. Since there will be no change in the exhaust emission values of your vehicle, there will be no smoke in your vehicle.