The regulator controls fuel pressure for your engine. When it goes bad, signs include misfires, black exhaust smoke, stalling ...

An ultra-high-performance engine, whether in a NASCAR, a Pro Stocker, or even a heavy-duty street machine, needs an incredible amount of fuel to do what it's supposed to do at high speeds.

The advent of the fuel-injected, 5.0 Mustang back in 1986 ushered in a whole new era of Ford performance. The 5.0 H.O. created an entire industry, one continued to this day since the introduction of ...