RENNtech ECU Hand Held Tuner | HHT | S 63 AMG | W221 | 534HP/485 LB-FT | 6.3L N/A | M156 | MY2008-2010 mercedes-benz-a-class--177---2019-present--a-35-amg-esr2974641 Titanium bolts are used to

Titanium bolts are used to mount the Strut Brace to the top of the strut towers

RPM Tuned: 484 HP | 485 LB FT

This highly integrated pre-preg carbon fiber spoiler compliments the sophisticated and refined C-Class exterior design language

6 GT3 (HP: 415 | Year: 06 > 11)

The V3 VAG DLM module requires no splicing or soldering

RENNtech ECU Hand Held Tuner | HHT | S 63 AMG | W221 | 534HP/485 LB-FT | 6.3L N/A | M156 | MY2008-2010 mercedes-benz-a-class--177---2019-present--a-35-amg-esr2974641 Titanium bolts are used toRENNtech ECU HHT (HandHeldTuner) for the 221 S 63 AMG. Up to 534HP and 485LB FT LB FT. Gains: +16HP & +20 LB FT. 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.