The standard power of your Audi A6 2.5 TDI 180hp vehicle is factory 180 hp / 370 nm. After Audi A6 chip tuning custom vehicle software, your vehicle will gain +30 hp / +50 nm additional power and reach a total power of 210 hp / 420 nm. Since there will be no change in the exhaust emission values of your vehicle, there will be no smoke in your vehicle.