RENNtech ECU+ Upgrade | C238 | E400 | 392 HP/463 LB-FT | 3.0L V6 BiTurbo | M276 | MY2018 mercedes-benz-cl-class--215---2001-2006--cl-600--2000-2002--esr9028642 Rated by Mercedes-Benz: 518 HP

Rated by Mercedes-Benz:      518 HP @ 5

SL 400 BiTurbo (R231 - M276 Biturbo 4-MATIC Engine) Modified Performance:

This ensures our customers receive components which not only look good on the vehicle standing still

the GLS 550 gains up to 66 HP and 167 LB-FT

The RENNtech Rear Diffuser is 100% pre-preg carbon fiber and developed to complement the full RENNtech AMG GT63 aerodynamic program

RENNtech ECU+ Upgrade | C238 | E400 | 392 HP/463 LB-FT | 3.0L V6 BiTurbo | M276 | MY2018 mercedes-benz-cl-class--215---2001-2006--cl-600--2000-2002--esr9028642 Rated by Mercedes-Benz: 518 HPECU+ Upgrade Up to 392 HP 463 LB FT Gains: +53 HP & +78 LB FT 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 you choose directly to the ECU.