Mercedes-Benz 300-Series | C Class | E Class | GLC Class | RENNtech Power Module | 286 HP/309 LB-FT | M274 | 2.0 L TurboECU+ Upgrade Up to 286 HP 309 LB FT Gains: +41 HP & +37 LB FT C300 E300 SLC300 GLC300 The RENNtech Power Module (RPM) ECU tune delivers significant horsepower and torque gains across the entire power band. By modifying boost mapping and keeping optimized air to fuel ratios, the entire power and torque curve is shifted upward delivering +41 HP +37 LB FT in the Mercedes Benz M274 DE20 LA engine, based on Dyno measured power figures. The RENNtech Power