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 ...

For many cars, their real life doesn't begin at the factory, but at the moment they roll off the dealership lot, and into the hands of an owner. For car enthusiasts, modification is a cornerstone of ...

One heavy-duty engine choice transformed a basic pickup into a platform that significantly reshaped diesel performance and aftermarket tuning culture.

The 5.7 HEMI is one of the most recognizable and celebrated American engines ever made. It's a beast of a power plant, with up to 395 horsepower and 410 lb-ft of torque on tap — right out of the box.

The Ford 3.5L EcoBoost V6 is considered to be a top-notch engine and is the powertrain that transformed the Ford F150 into one of the most powerful towing pickup trucks ever built. Beyond the F-150, ...