Mercedes-Benz AMG 53 Series | RENNtech Power Module | 494 HP/445 LB-FT | M256 | 3.0L I6 Turbo EQ BoostRENNtech Power Module M256 AMG 53 3. 0L I6 Turbo EQ Boost Up to 494 HP 480 LB FT Gains: +59 HP & +97 LB FT The RENNtech Power Module (RPM) ECU tune delivers significant horsepower and torque gains across the entire power band. By modifying ignition timing and throttle mapping, optimizing air to fuel ratios, and modifying boost mapping for turbo chargers the Mercedes AMG 53 M256 3. 0L I6 Turbo EQ Boost engine gains up to +59 HP and +97 LB FT, based on