RENNtech logo NEW small v2b

RENNtech ECU Upgrade | CLA 45 AMG | C117 | 428HP/417LB-FT | 2.0L Turbo | M133

RENNtech ECU Upgrade for the 117 - CLA 45 AMG. Up to 428HP and 417TQ.
Gains: +53HP & +67TQ
SKU: ECU:54.117.CLA45
Retail price without tax: $1,780.00

Online Store Button

RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!

Our proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to the ECU. Programming takes only a few minutes and the vehicle can be reflashed at any time as many times as you wish.

RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980s! Our experience, countless hours of in-house research, development and exhaustive testing ensure that our proprietary ECU upgrade offers incredible performance gains and rock solid daily driver reliability.

RENNtech tuning software for Mercedes offers significant gains in horsepower and torque across the vehicle's entire power band. By modifying ignition timing and throttle mapping, optimizing air-to-fuel ratios, increasing the engine's rev limiter and modifying boost mapping for turbo-charged vehicles, RENNtech performance software unleashes the true potential of your Mercedes.


RENNtech M133 ECU Upgrades are TÜV approved!

Our proprietary ECU upgrade for the Mercedes M133 engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability.

Our ECU tune offers the biggest performance gains on the market with our dyno results increasing performance from 355 HP and 332 lb/ft torque, up to an astonishing 428 HP and 417 lb/ft at the crank!


CLA 45 AMG (C117 - M133 2.0L Engine) Stock Performance:

  • 375 hp @ 6,000 RPM; 350 lb-ft @ 2,250-5,000 RPM
  • Note: Mercedes M133 engine performance when measured obtains higher numbers that rated from factory.


Performance Numbers Overview 

CLA 45 AMG (MY2013+ | C117 | M133 | 2.0L Inline-4 Turbo) Stock Performance (at crank):

  • 355 HP @ 6,000rpm; 332 LB-FT @ 2,250-5,000rpm
    • Note: Mercedes M133 engine performance when measured, obtains higher power numbers than rated from factory.


    CLA 45 AMG (MY2013+ | C117 | M133 | 2.0L Inline-4 Turbo) Modified Performance (at crank):

    • Rated by RENNtech:              428 HP @ 6,150rpm; 417 LB-FT @ 4,050rpm
    •                                                     351 whp @ 6,150rpm; 342 wtq @ 4,050rpm
      • Crank Performance Numbers are calculated with a 18% Drivetrain loss on the 4-MATIC vehicles.




Contact us

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


© 2017 RENNtech, Inc. All Rights Reserved.
7825 SW Ellipse Way - Stuart, FL 34997
TEL: 561.845.7888 FAX: 561.845.6777 E-MAIL: