RENNtech Power Module | CLE 53 AMG | 541 HP / 571 LB-FT | M256 | 3.0L I6 Turbo EQ BoostRENNtech Power Module CLE 53 AMG 3. 0L I6 Turbo EQ Boost Up to 541 HP 571 LB FT Gains: +48 HP & +54 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 M256 3. 0L I6 Turbo engine gains up to +48 HP and +54LB FT, based on Dyno measured