The standard power of your Chevrolet Corvette 6.0 V8 400hp vehicle is factory 400 hp / 540 nm. After Chevrolet Corvette chip tuning custom vehicle software, your vehicle will gain +20 hp / +30 nm additional power and reach a total power of 420 hp / 570 nm. Since there will be no change in the exhaust emission values of your vehicle, there will be no smoke in your vehicle.