We earn commissions from purchases you make using links in our articles. Learn more. Anyone who works on their car should have a multimeter, but they come in handy around the house too. Whether you ...

Ever since the first race cars were built, it's been helpful for drivers to know their engine speed. It may sound obvious, but engine power is always a function of engine speed, so accurately knowing ...

The Chrysler engineers didn't get their degrees out of a Cracker Jack box. The engine and transmission on eight-lug trucks have been designed for OEM specs. Adding power chips, exhaust manifolds, and ...

They say knowledge is power but when it comes to horsepower, you need to know what’s going on underhood at any given moment. It doesn’t matter if it’s a race car or your daily driver, having vital ...

Craig brought 15 years of automotive journalism experience to the Cars team. A lifelong resident of Michigan, he's as happy with a wrench or welding gun in hand as he is in front of the camera or ...

Every year, us lucky editors sit down with aftermarket manufacturers and listen to their best new product pitches. Going in, we never know if we'll be stifling back yawns, or if a new product is going ...

Stick-type pressure gauges resemble a ballpoint pen are simple and compact, and don't need batteries. Pressure is read off of a sliding scale proportional to the air pressure. Digital gauges have an ...

The Auto Meter VF measures the flash light (momentary light) and ambient light (continuous light) exposure separately with a single measurement operation. (Flash light/ambient light portion ...