R1 Performance Package | W463 | G 55K | 530 HP / 566 TQ | 5.5L Supercharged V8 | M113

Performance package R1 includes our proprietary ECU tune 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:

• RENNtech ECU Upgrade
• RENNtech Crankshaft Pulley
• RENNtech High Flow Intercooler Pump

G55 Stock Performance:

• 493 HP @ 5500 RPM; 516 LB-FT @ 2650-4800 RPM

Modified Performance:

• 530 HP @ 5900 RPM; 566 LB-FT @ 2650-4500 RPM

Gains:

• +37 HP / +50 LB-FT