R2 Performance Package for SL 63 (R230- 566 HP / 518 LB-FT) alfa-romeo-giulia-quadrifoglio--952---2017-2023--2-2-jtd-esr7280033 Rated by RENNtech: 574 HP

Rated by RENNtech:               574 HP @ 5

States known for poor fuel quality have to be supplied with a lower power setup

Rated by Mercedes-Benz:                        429 HP @ 6

CLK COUPE' (C 209) 63 AMG Black Series [2 Filters Required] (HP: 507 | Year: 07 > 09)

RPM Tuned: 508 HP | 512 LB-FT

R2 Performance Package for SL 63 (R230- 566 HP / 518 LB-FT) alfa-romeo-giulia-quadrifoglio--952---2017-2023--2-2-jtd-esr7280033 Rated by RENNtech: 574 HPR2 Performance Package for 230 SL 63 AMG. Includes ECU Upgrade, Carbon Fiber Air Box, Upgraded Throttle Body and Stainless Steel Headers. Up to 566HP and 518LB FT. Gains: +59HP & +43LB FT RENNtech performance package 2 includes our proprietary ECU tune in addition to our full carbon fiber airbox, 82mm throttle body kit and RENNtech stainless steel headers for a gain of +48 HP and +53 LB FT over stock. Performance Package 2 Includes: RENNtech ECU