Morning Overview on MSN

Do Harley-Davidson engines need exhaust backpressure to make power?

The idea that Harley-Davidson engines need exhaust backpressure to produce power is one of the most persistent beliefs in the motorcycle world. Riders who bolt on straight pipes often report a loss of ...
Engineering Explained on MSN

How Mazda is eliminating turbo lag

How Mazda's Dynamic Pressure Turbo Works - Mazda CX-9 The Mazda CX-9 is powered by a 2.5L inline four-cylinder turbocharged ...