Unleash exhilarating performance with OGPT’s custom ECU tuning for BMW 4 serie 420D 163hp. With an additional 57 HP and 45 ft-lb, your vehicle will deliver sharper acceleration, stronger mid-range torque, and a more engaging driving character. Our tuning philosophy is centered on achieving the perfect balance between power and longevity. Every map is carefully crafted in-house, refined on the dyno, and validated on the road to provide an authentic and reliable improvement. Experience a new level of excitement behind the wheel while preserving everyday usability.