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RENNtech Power Module | AMG 53 | 494 HP/445 LB-FT | M256 | 3.0L I6 Turbo EQ Boost

RENNtech Power Module | M256 AMG 53 | 3.0L I6 Turbo EQ Boost | Up to 494 HP / 480 LB-FT | Gains: +59 HP & +97 LB-FT
SKU: 54.256.RPM.53
Renntech Piggyback ECU Tuner Renntech Piggyback ECU Tuner
Retail price without tax: $2,780.00
Renntech Piggyback ECU Tuner
Renntech Piggyback ECU Tuner
Renntech Piggyback ECU Tuner

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 Dyno measured power figures.


The RENNtech Power Module is contained in a CNC machined 6061 aluminum enclosure with pre-labeled wires and connectors. The RPM module comes with a bypass that can be installed in place of the module to quickly turn the vehicle back to stock performance. The harness can be uninstalled to return the vehicle to stock completely. Through our 30+ years of ECU tuning experience, countless hours of in-house research, development and long-term testing ensure that our ECU upgrade offers the best in quality, performance and reliability.


Stock: 435 HPand 383 TQ
RPM Tuned: 494 HP and 480 TQ

The RENNtech Power Module for Mercedes-AMG 53 M256 -engines:

  • E 53 AMG (W213 / S213 -chassis)
  • CLS 53 AMG (C257 -chassis)
  • GT 53 AMG (X290 -chassis)
  • GLE 53 AMG (V167 -chassis)

Professional installation is recommended. 

  • Buyer Beware: There have been reported failures the stock Turbo’s in the Mercedes-AMG 53 series M256 -engine. Increasing the power output without upgrading the OEM turbo charger may increase the chance of Turbo -failure. See STAGE 1  and STAGE 2 Turbo Upgrade for additional details.




Contact us

7825 SW Ellipse Way, Stuart, FL 34997
(+1) 561 - 845 7888
Mon - Fri 9am - 6pm


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7825 SW Ellipse Way - Stuart, FL 34997
TEL: 561.845.7888 FAX: 561.845.6777 E-MAIL: