If you want to make your diesel go fast, there are only two things you need to make it happen: more air and more fuel. Of course, that’s entirely oversimplifying the situation, but you get the picture ...

It may not have the coolness quotient of a high-lift cam or a rowdy exhaust system, but a properly functioning set of fuel injectors plays a critical role in optimizing overall engine performance.

The most common 1.6-liter VVTi engine on your Toyota Corolla features a bundle of electrical wires attached to it that controls things like fuel injectors and ignition coils. If for some reason you’ve ...