We fully understand the sense of irony with the name Romeo Ferraris and the cars that they work on, but nevertheless, it doesn’t take away from the quality of work they’ve done over the years.
Fresh off their works on the Smart ForTwo, the Abarth 500, and the Audi RS6, the Italian aftermarket company is turning its attention on a pair of high-powered German SUVs in the form of the BMW X5M and the BMW X6M. In this instance, Romeo Ferraris prepared a conversion kit for both the X5M and the X6M, and the 4.4-liter twin-turbo V8 engine they come in. The first step of the kit involves reprogramming their ECU systems, bumping up the output to 604 horsepower and 574 lb/ft of torque - up from the standard 555 horsepower and 501 lb/ft of torque it comes in. The next step after that is mapping and adding a pair of optional central terminals and sports matches. This upgrade further bumps up the SUVs output to a staggering 655 horsepower and 638 lb/ft of torque.[...]
Source: topspeed Tuning