The standard power of your Renault Express 1.5 dCi 75hp vehicle is factory 75 hp / 200 nm. After Renault Express chip tuning custom vehicle software, your vehicle will gain +65 hp / +120 nm additional power and reach a total power of 140 hp / 320 nm. Since there will be no change in the exhaust emission values of your vehicle, there will be no smoke in your vehicle.