The forefathers of speed could only dream of street cars that were both reliable and capable of 800 hp or more—funny thing is, these days it is commonplace. We can thank technology’s rapid advance ...

When Ford introduced the SEFI 5.0L High Output Mustang in 1986 many predicted the end of the tunable engine. Ironically it was the beginning of a new era of super-tunable small-block Fords that would ...

Just like spark plugs, ignition coils can wear down and become faulty over time. There are many common signs that an ignition coil is getting bad, but one obvious sign is an engine misfire, typically ...

Your bike's plugs do their job without a whimper, so you stop thinking about how long they've been in there. You're not alone: One of our own has a 10,000-mile-old SV650 whose plugs have never been ...

Stock 5.7 Hemi coil (right) next to a Performance Distributors' SOS coil. The SOS coil looks identical to the factory coil but has more windings that employ a heavier gauge wire. [/caption] With a ...

We may receive a commission on purchases made from links. Is your car misfiring, having trouble starting, or idling rough? Are you wondering if the problem is one of your coil packs? If you're like ...