R1 Performance Package | R230 | SL 55K | 538 HP / 566 LB-FT | 5.5L Supercharged V8 | M113 audi-r8-5-2l-fsi-esr7397881 R2 Performance Package for the

R2 Performance Package for the W205 - C 63 AMG includes:

570 LB-FT @ 1800 RPM

RENNtech Transmission Software Upgrade for 722

Crank Performance Numbers are calculated with a 14% Drivetrain loss on RWDvehicles

S 500 (W220) Stock Performance:

R1 Performance Package | R230 | SL 55K | 538 HP / 566 LB-FT | 5.5L Supercharged V8 | M113 audi-r8-5-2l-fsi-esr7397881 R2 Performance Package for theR1 Performance Package for 230 SL 55 AMG Kompressor. Includes ECU Upgrade, Crankshaft Pulley and Upgraded Intercooler Pump. Up to 538HP and 566LB FT. Gains: +45HP & +48LB FT Performance package R1 includes our proprietary HHT Hand Held Tuner ECU Upgrade and crankshaft pulley in addition to our higher efficiency intercooler pump for increased, power, performance and throttle response across the entire powerband. R1 Performance Package includes: