A twin-scroll turbo, on the other hand, is a single turbo that's designed to do that same job, with a body split into two such channels. There are several benefits to this arrangement over ...

Much of BMW's U.S. market lineup is making the switch to a 2011 model year designation early this spring with the highlight being a new version of the 3.0-liter inline-six cylinder engine dubbed N55.

This means that variable twin-scroll turbochargers could be feasible for use in a wide range of vehicles at a reasonable price point. Follow Motor Authority on Facebook , Twitter and YouTube . Tags: ...

Because they've managed to get the output of the single twin-scroll turbo to match the twin-turbo's at 300 horsepower, and just as much torque at 300 pound-feet, but it does it 100 rpm earlier.

BMW is gradually replacing its N54 3.0-liter twin-turbocharged inline-six (featured in models like the 335i) with the firm’s new twin-scroll turbocharged 3.0-liter inline six cylinder engine ...