Our vehicles are just like us, if they don't have a chance to breathe, they will die... well, not quite, but their performance, fuel economy, and life span will be dramatically shortened. Typically, ...

Increasingly stringent diesel engine exhaust emissions regulations have, over the past 20 years, reduced output of nitrogen oxides (NOx) by 95% and particulate emissions by 90% in heavy trucks. These ...

Helping your engine breathe with an updated intake is a simple way to make performance gains, and Spelab has multiple options ...

There’s hardly anything on a truck that’s simpler than its air-intake system. And not too many things – maybe only your right foot – that can have as much effect on fuel economy. A diesel engine needs ...

One of the first modifications we make to our trucks is the addition of a cold-air intake—but what kind of power do we really stand to gain from this $300 investment? Because 10 to 30hp increases are ...