The standard power of your Audi A6 2.7 TDI 190hp vehicle is factory 190 hp / 450 nm. After Audi A6 chip tuning custom vehicle software, your vehicle will gain +40 hp / +70 nm additional power and reach a total power of 230 hp / 520 nm. Since there will be no change in the exhaust emission values of your vehicle, there will be no smoke in your vehicle.