That said, the BMW M57 engine and Audi 3.0-liter Turbo Fuel Stratified Injection (TFSI ... it's also important to consider the cooling system and upgrade appropriately; the first places most ...

BMW Blog found one that drove 495,615 miles with its original engine. The M57 is such a good base to ... a higher-flow fuel system with uprated injector nozzles, and a software remap.