Maxie
Member
I have a question regarding the different horsepower rating between the Expedition XLT/Limited rated at 375 horsepower, the Expedition Platinum rated at 400 horsepower and the Navigator rated at 450 horsepower. Is this difference accomplished strictly through different tunings to the 3.5 EcoBoost or are there actual mechanical differences between the engines, such as different cams, heads, turbos, etc.?