The standard power of your Porsche 911 Carrera 3.4i 350hp vehicle is factory 350 hp / 390 nm. After Porsche 911 chip tuning custom vehicle software, your vehicle will gain +20 hp / +20 nm additional power and reach a total power of 370 hp / 410 nm. Since there will be no change in the exhaust emission values of your vehicle, there will be no smoke in your vehicle.