Having the engine on my ’91 Bronco suddenly die while rolling along the interstate at 70 mph with big rigs and cars all around is one of the most unnerving situations I’ve been in, on or off-road.

The Rush a power adder can add to your internal combustion engine can be a fulfilling and fun experience. The surge of supercharged horsepower or the instant torque of a nitrous hit is sure to put a ...