There's an old saying in engine tuning that when adjusting the mixture of your engine you can be too rich a bunch of times, but only too lean once. With that in mind, determining the air-fuel ratio ...

Calling a Honda Civic with a laptop “the most feared thing in the car community” is mostly a joke—but it didn’t come out of nowhere. Some cars, certainly some Civics, can make a lot more power than ...

It doesn't require a fortune to add some horsepower to your car. In fact, here are some of the most effective engine mods ...

You've probably heard about the three "stages" of tuning, but what do they mean? And is there any standard definition for each of the three?

Some ways to increase horsepower for under $1000 include using cold-air intakes, high-flow mufflers, ECU flashes, fuel system ...