RENNtech ECU Upgrade | CLS 400 | C218 | 392HP/432TQ | 3.0L BiTurbo V6 | M276 | MY2015-2018 audi-s5--b9-5---2020-2024--3-0l-v6-tfsi-esr2469158 and tested using state-of-the-art programs

and tested using state-of-the-art programs and analysis tools for achieveing an OEM level of quality and fitment at the RENNtech headquarters in Stuart

A 45 AMG (MY2013+ | W176 | M133 | 2

CLASS R LONG (W 251) 63 AMG 4-matic [2 Filters Required] (HP: 510 | Year: 06 > 07)

E63 (S) AMG (W212 | Sedan | PFL MY2012-13 | RWD | M157 | 5

Reduce risk of brake fluid boiling

RENNtech ECU Upgrade | CLS 400 | C218 | 392HP/432TQ | 3.0L BiTurbo V6 | M276 | MY2015-2018 audi-s5--b9-5---2020-2024--3-0l-v6-tfsi-esr2469158 and tested using state-of-the-art programsRENNtech ECU Upgrade for 218 CLS 400 BiTurbo 4 MATIC. Up to 392HP and 432TQ. Gains: +63HP & +78TQ RENNtech M276 Biturbo ECU Upgrades are TV approved! 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