R1 Performance Package | C219 | CLS 500 | 325 HP / 365 LB-FT | 5.0L NA V8 | M113 mercedes-benz-amg-gt--190---2015-2017--gt-s---2015-2017--esr1356663 With the proprietary RENNtech ECU

With the proprietary RENNtech ECU Tuning the W463 - G63 AMG gains up to +88 HP and +66 LB-FT (+75 WHP and +56 WTQ)

218 - CLS 63 AMG (Pre-FaceLift up to MY 2014 / non 4-MATIC)

CLASS E (W 211) 280 V6 4-matic [2 Filters Required] (HP: 231 | Year: 05 > 09)

496awtq @ 3

Please note that the Mercedes M176 engine performance when measured

R1 Performance Package | C219 | CLS 500 | 325 HP / 365 LB-FT | 5.0L NA V8 | M113 mercedes-benz-amg-gt--190---2015-2017--gt-s---2015-2017--esr1356663 With the proprietary RENNtech ECUR1 Performance Package for 219 CLS 500. Includes ECU Upgrade and Carbon Fiber Air Box. Up to 325HP and 365 LB FT. The R1 performance package for the Mercedes 500 series engine includes our proprietary ECU upgrade in addition to our full carbon fiber airbox upgrade which offers a larger volume of incoming air for better engine breathing and improved cylinder filling. This combination that provides noticeable increases horsepower, torque and throttle