Car enthusiasts of a certain age may feel particularly dated by the following fact: the first two powerplants to mark BMW's mass-market adoption of twin-turbo engines are about to start turning 20.

For decades, many of us have followed the same practice with project cars. Typically, the first parts we pick up are an intake and exhaust. However, performance software became a hugely popular mod, ...

BMW is now known for making excellent turbocharged engines like the B58 inline-six, which powers models like the 340i and X3. Of course, the company didn't just stumble upon the formula for a ...