RENNtech R2 Pkg | R231 | SL 63 AMG | 706 HP / 816 LB-FT | M157 | 5.5L V8 BiTurbo | MY2015+ porsche-911--991-2---2015-2019--turbo-esr9224082 0L V8 BiTurbo) Stock Performance

0L V8 BiTurbo) Stock Performance (at crank):

but also has the option of a lower sound level when the valves are closed

especially at lower RPMs

Rated by RENNtech (peak @crank):              1

similar to the pocketing process

RENNtech R2 Pkg | R231 | SL 63 AMG | 706 HP / 816 LB-FT | M157 | 5.5L V8 BiTurbo | MY2015+ porsche-911--991-2---2015-2019--turbo-esr9224082 0L V8 BiTurbo) Stock PerformanceR2 includes: ECU Upgrade, Diverter Valve, Air Filters, Sport Mufflers Gains: +111HP; +147LB FT The RENNtech R2 Performance Package is the evolution stage of the R1 Pkg. The R2 not only brings additional power, but also gives the car a deeper sport sound that keeps with character of a luxury performance vehicle. Included in the R2 Package are all upgrades from the R1 Pkg, ECU Upgrade, Diverter Valve and Air Filters, and Stainless Steel Sport Mufflers.