RENNtech | ECU Upgrade | SL 450 AMG | R231 | 402HP/454LB-FT | 3.0L BiTurbo V6 | M276 porsche-718-cayman--my2016-18--esr3545487 This spoiler is designed to

This spoiler is designed to fit any S-Class Coupé model from 2014 and up

though our proprietary tuning software and approach for Bentley is completely unique and independent from our Mercedes tuning program

it can produce more noise than a street tech kit

8L DFI Stock Performance:

633 LB-FT @ 5

RENNtech | ECU Upgrade | SL 450 AMG | R231 | 402HP/454LB-FT | 3.0L BiTurbo V6 | M276 porsche-718-cayman--my2016-18--esr3545487 This spoiler is designed toRENNtech ECU Upgrade for 231 SL 450 AMG BiTurbo. Up to 402HP and 454LB FT. Gains: +40HP & +70LB FT RENNtech M276 Biturbo ECU Upgrades are TV approved! RENNtech tuning products are certified to meet CARB standards in all 50 States. 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