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 ...

While some have advantages over others, these 12 engines have displayed optimal traits for successful tuning.

After having a proper platform with improved brakes, suspension, and transmission, the car is now ready to receive a better heart so it can move as great as it looks. But do that smart, and you'll get ...

Whether basic bolt-ons or forced-induction, gearheads can’t help but modify their rides. With the rise of handheld and PC-based ECU tuners, folks have an easier time than ever making big power from ...