Discover the true potential of your Mercedes-Benz E 300de 306hp with OGPT's bespoke ECU tuning solutions. By focusing on optimizing fuel delivery, ignition timing, and turbo control strategies, we extract an impressive extra 29 HP and 45 ft-lb. Our approach goes beyond simple power gains — we also enhance throttle response and overall driving feel. Whether you're chasing track-day performance or a more dynamic street experience, our custom tunes are designed to transform your car while maintaining OEM-level safety and reliability.