CARB Approved: The Evolution CTS2 California Edition by Edge is CARB approved! EO#: D-541-13
***If you have had an EGR or DPF delete done on your truck, then this tuner will not work. Only use if your truck still has its Diesel Particulate Filter(DPF), Exhaust Gas Recirculation(EGR), and Reductant(Urea) Injection installed.