The German tuner starts with a standard Panamera 4S, which leaves Porsche?s factory with a 4.8-liter V8 engine churning out 400-horses and 500Nm of peak torque. The performance modifications, courtesy of Rennsport, include a software optimization (?990 or about US$1,443) that increase output to 425HP and 535Nm, along with a suspension module (?390 or around US$568) that lower?s the ride height by 40mm and sport exhaust system (?590 or about US$860).