R1 Performance Package | C209 | CLK 500 | 325 HP / 365 LB-FT | 5.0L NA V8 | M113 mercedes-benz-sl-class--231---2012-2016--sl-65-amg-biturbo-esr8588212 R3+ Performance Package for Mercedes-AMG

R3+ Performance Package for Mercedes-AMG S 63: ECU Upgrade (HHT)

Rated by RENNtech (peak @crank):              584 HP @ 4

350 lb-ft @ 2

Substantially larger than stock and a symmetrical design that delivers over 30% more filter area allows the engine to perform at the highest level in both stock and tuned form

CLASS R (W 251) 500 4-matic [2 Filters Required] (HP: 306 | Year: 05 > 07)

R1 Performance Package | C209 | CLK 500 | 325 HP / 365 LB-FT | 5.0L NA V8 | M113 mercedes-benz-sl-class--231---2012-2016--sl-65-amg-biturbo-esr8588212 R3+ Performance Package for Mercedes-AMGR1 Performance Package for 209 CLK 500. Includes ECU Upgrade and Carbon Fiber Air Box. Up to 325HP and 365 LB FT. The R1 performance package for the Mercedes 500 series engine includes our proprietary ECU upgrade in addition to our full carbon fiber airbox upgrade which offers a larger volume of incoming air for better engine breathing and improved cylinder filling. This combination that provides noticeable increases horsepower, torque and throttle