One of the most recognizable semi truck features are the vertical exhaust stacks. Other than looking cool, they also carry a ...

Curious why some cars have four exhaust pipes? Learn what they do, how they boost performance, and why automakers add them to ...

I’ve seen backpressures as high as 13 psi, and many cars are running 8-9 psi. Anything over about 5 psi means you’ll probably be able to make improvements. Find Out Which Parts Of The Exhaust ...

The large piping helps eliminate backpressure and improve scavenging, a combination of factors that creates a vacuum force that helps to pull exhaust out of the engine. Like many modern cars ...

steamy car exhaust over them could improve their efficiency and reduce the amount of rare and expensive metals required in vehicle catalytic converters and many other emission control and ...