Subaru built the only twin turbo flat four in a production car. Here is how this rare EJ20 setup worked, why it struggled, ...

Twin turbochargers have their pros and cons, and two main setups try to maximize the pros. Here's the difference between parallel and sequential twin turbos.

Although Subaru didn't invent flat engines, and isn't the only automaker still using them, those motors have become a defining characteristic of the brand. (The same can be said for all-wheel drive, ...

The modern F-150 market hasn’t just heated up—it’s gone volcanic as sport trucking is back in a big way, and there is a large focus on performance. Tuners, builders, and specialty manufacturers are ...

Add Yahoo as a preferred source to see more of our stories on Google. The turbocharger has brought significant improvements to automotive engines' output. In those engines, exhaust gas that leaves the ...