RENNtech ECU Upgrade | SL 400 | R230 | 392HP/432LB-FT | 3.0L BiTurbo V6 | M276 mercedes-benz-e-class-sedan--213---2017-present--e-450-esr5934179 Constructed out of high-quality carbon

Constructed out of high-quality carbon fiber

Crank Performance Numbers are calculated with a 18% Drivetrain loss on the 4-MATIC vehicles

627 LB-FT @ 2

RENNtech ECU HHT (HandHeldTuner) for the 204 - C 63 AMG Black Series

No modifications to the OEM part or fender needed

RENNtech ECU Upgrade | SL 400 | R230 | 392HP/432LB-FT | 3.0L BiTurbo V6 | M276 mercedes-benz-e-class-sedan--213---2017-present--e-450-esr5934179 Constructed out of high-quality carbonRENNtech ECU Upgrade for 231 SL 400 BiTurbo 4 MATIC. Up to 392HP and 432LB FT. Gains: +63HP & +78LB 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