You've got an intake, an exhaust, and a programmer but are still hungry for more bolt-on performance. Most people turn attention to the ignition next. To get more performance out of your classic muscle car you have installed a hotter coil, performance distributor, and a high-dollar wire set. However, modern-day engines have no distributor, nor coil, nor even spark plug wires, because late model trucks use distributorless coil-on-plug ignition systems. Thankfully the good folks over at Performance Distributors, the same company that makes the high performance D.U.I. distributors that you are probably familiar with, have come up with a solution for the late-model Ford truck owner who wants more out of his ignition system. The Sultans of Spark (or S.O.S. for short) coil packs pack an amazing punch, putting out 40,000 volts - nearly a 60-percent increase over the 25,000 volts the factory packs produce. The increase in spark voltage along with an increase in spark duration will allow you to open up the spark plug gap, resulting in a better fuel burn, more power, and an increase in fuel economy. By the time you read this, we will have put many thousands of test miles on a set of S.O.S. coils that we installed on our 2007 F-150 test truck; so be sure to check out our website at www.off-roadweb.com for an update on our real-world mileage and performance increases from the S.O.S. coils. 1. Locating the factory coil packs on your engine is the first step in installing the new S.O.S. coils. The coil packs are going to be found in the cylinder head under the fuel rail, assorted wire looms, and random hoses tucked away where some engineer never thought you would look for them. It is best to start with the most difficult-to-reach first, which will be the coil packs on the rear-most cylinders.1. Locating the factory coil packs on your engine is the first step in installing the new 2. Before removing the factory coil packs, it is a good idea to clear away any debris such as sand, dirt, leaves, and anything else that could drop into the spark plug holes. A good way to do this is by simply blowing the areas around the coil packs clear with your trusty air compressor.2. Before removing the factory coil packs, it is a good idea to clear away any debris such 3. Once you have located all the coil packs and cleaned the area around them it is time to remove the factory coil packs from the truck. Using the necessary arrangement of sockets and extensions, gently remove the retaining bolt from each coil pack.3. Once you have located all the coil packs and cleaned the area around them it is time to 4. With the retaining bolt removed, you will now need to unplug the coil pack from the wire harness. After unplugging the coil pack firmly pull the unit out of its resting place. Removing some of the coil packs may require that you also unplug or move other items to gain access. Be sure to remember what has been unplugged and return everything to its home once the new coil has been installed.4. With the retaining bolt removed, you will now need to unplug the coil pack from the wir 5. Installation of the new S.O.S. coil packs is a snap once the factory unit is removed; simply reverse the steps. Place the coil pack in the plug hole, snap on the wire harness, and gently tighten the retaining bolt.5. Installation of the new S.O.S. coil packs is a snap once the factory unit is removed; s 6. One thing you will notice while removing the old coil packs is that some of them may want to separate. Don't fret; this is normal. The coil packs used on your Ford engine are a three piece design with a coil, electrode wire, and a boot. After many miles of use the rubber boot that seals the plug hole can wedge its self in causing the pack to come apart when you pull it out. If this happens simply take it out one piece at a time and reassemble them once they are out, you didn't hurt anything.6. One thing you will notice while removing the old coil packs is that some of them may wa Sources Performance Distributors 2699 Barris Drive Memphis TN 38132 901-396-5782 www.performancedistributors.com By Jason Gonderman Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!