RENNtech R1 Pkg | R231 | SL 63 AMG | 696 HP / 801 LB-FT | M157 | 5.5L V8 BiTurbo mercedes-benz-s-class--220---1999-2006--s-65-amg-esr3449432 and functionality is fully optimized

and functionality is fully optimized when combined with RENNtech's fender-extractors

the S 550 Coupé gains up to 66 HP and 139 LB-FT

Programming takes only a few minutes and the vehicle can be reflashed at any time as many times as you wish

+182 LB-FT

in addition to serving as an attractive under hood showpiece

RENNtech R1 Pkg | R231 | SL 63 AMG | 696 HP / 801 LB-FT | M157 | 5.5L V8 BiTurbo mercedes-benz-s-class--220---1999-2006--s-65-amg-esr3449432 and functionality is fully optimizedR1 includes: ECU Upgrade, Diverter Valve and Air Filters Gains: +91HP; +132LB FT The RENNtech R1 Performance Package is the perfect entry level performance upgrade for the E 63 AMG. With the combination of the RENNtech ECU Upgrade and the latest, 3rd generation Diverter Valve RENNtech is able to add up to 91 HP and 132 LB FT to the 5. 5L V8 BiTurbo engine (compared to RENNtech rated stock performance). The addition of the upgraded diverter valve helps