RENNtech ECU+ Upgrade | W221 | S 63 AMG | Sedan | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2011-13 mercedes-benz-s-class-coupe--217---2015-2017--s-65-amg-esr5480974 Any parts with more noticeable

Any parts with more noticeable areas of concern are scrapped entirely and never offered to our highly discerning clientele

is 20-30% stiffer and stronger than an equivalent thickness wet laminate process

217 - S 63 AMG Coupé 4-MATIC

The Exhaust Valve Module allows you to fully open the exhaust valves of the AMG Sport Exhaust by pressing Button 1 on the remote control

CLASS C SW (S 203) 280 V6 [Needs 2 Filters] (HP: 231 | Year: 05 > 07)

RENNtech ECU+ Upgrade | W221 | S 63 AMG | Sedan | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2011-13 mercedes-benz-s-class-coupe--217---2015-2017--s-65-amg-esr5480974 Any parts with more noticeableECU+ Upgrade Up to 669HP 734TQ Gains: +106 HP +140TQ 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