Mercedes Benz S550 Dyno Tuned CA91 5.5L V8 Dyno tuned by OE Tuning +36.2wHp & +45.3wTq@2250rpm Baseline Max 267Hp, Tuned Max 291Hp Same engine as CL550, CLS550, CLK550, E550, S550, SL550, ML550, GL550
