The phase two performance system for the Mercedes 500 series car engine takes performance to another level. Renntech s point two system consists of Renntech s proprietary ECU up grade as well as Renntech s supercharger set up with intercooler improvement changing your typically aspirated 500 set into a supercharged beast! Efficiency is bumped to an astounding 460 HP plus 465 TQ across a widened powerband making the RENNtech phase two performance plan the final improvement for the Mercedes Benz.106 HP gain89 FT LB gainSupercharger kitIntercooler upgradeFitment Mercedes Benz SLK55 AMG R171 2004-2011...