The claim of 70 hp in 3 hours is a genuine claim. No b.s. here. Our Project Sinatra F-150 may be just like your truck. It had several common bolt-on performance mods, including an Allen Engineering supercharger; but it was never tuned, was using the stock injectors, and didn't have great driveability. Another problem we had was the errant reading speedometer. Larger wheels and tires, combined with 4.10 gears, left our speedo with an offreading of 10 mph. This was not only adding miles to the odometer, it was also annoying. If this sounds familiar, please don't be disgruntled; we have the answer you've been looking for. With the supercharger pushing roughly 5.5 psi into the stock 4.6L, the engine needed fuel to compensate. It also needed better timing parameters and a stable spark to make sure the atomization was occurring consistently.
Solving these vital issues were larger 42 lb/hr Ford Racing injectors, Autolite Iridium spark plugs, a DiabloSport Predator tuner, and a professional dyno tune, courtesy of Steve Ridout of Powertrain Dynamics in Huntington Beach, California. These components teamed together to create a 4.6L that would make a 5.4L Lightning owner proud. The results speak for themselves: a 70hp-peak gain, a much-flatter torque curve, longer and stronger transmission shifts that go to redline, and a part-throttle response that is as different as night and day. If your truck has parts that should be making more power, but you feel it doesn't meet your requirements, consider a tuning, then let the computer do the wrenching for you.
 Starting with 42lb/hr Ford...  Starting with 42lb/hr Ford Racing fuel injectors, our confidence was already rising. These same injectors power the supercharged 5.4L V-8 Lightning trucks up and down the dragstrips of America. Reliability and performance are two words associated with these green bad boys. |  We had to remove the Allen...  We had to remove the Allen Engineering fuel-pressure booster add-on piece that simply press-fitted into place on top of the factory fuel-pressure regulator via an O-ring. With that out of the way, we had access to the fuel rails. |  Out came the 19 lb/hr stock...  Out came the 19 lb/hr stock 4.6L fuel injectors. |
 In went the awesome 42 lb/hr...  In went the awesome 42 lb/hr Ford Racing injectors. |  A quick fuel-pressure test...  A quick fuel-pressure test was performed to ensure proper psi and to check for leaks. Once we were good-to-go, we moved on to the spark plug install. |  Opting for a heat range cooler...  Opting for a heat range cooler than factory, we installed Autolite Iridium XP 103 spark plugs. These high-performance plugs are perfect for boosted applications and will make sure all of the extra fuel and air is burned off correctly. |