Exhaust Gas Recirculation (EGR) valve is a critical part of modern diesel and gasoline engines since it regulates emissions and reduces nitrogen oxides (NOx).

More power. It’s what almost every owner wants from their car, truck, or SUV, but the question is how do you get it? T ...

In Part 1, I regaled you all with the brief history behind the discovery of photochemical smog, and then proceeded to dazzle ...