The standard power of your Mazda 6 2.0 CiTD 140hp vehicle is factory 140 hp / 330 nm. After Mazda 6 chip tuning custom vehicle software, your vehicle will gain +30 hp / +70 nm additional power and reach a total power of 170 hp / 400 nm. Since there will be no change in the exhaust emission values of your vehicle, there will be no smoke in your vehicle.