At the time, diesel motorsports were becoming quite popular and the 6.4L Super Duty was here to party. They sucked back fuel, but, they made decent power, however, when the emissions systems were removed, the trucks turned in complete animals. This was the early stages of the DPF system, this was before DEF fluid was used and the trucks had to rely on the heat of the engine to burn out the catalysts. With the introduction of the first round of the DPF and the increasingly intense EGR systems, these trucks started to plug up quick. Unfortunately, the 6.4L was introduced into the market at the same time as emissions laws became much more strict and manufacturers had to start engineering their trucks to a much higher standard. Ford was finally in-line with their competition! This meant no more tough starting, rough running, high-pressure oil leaking fun that Ford guys had gotten accustomed to over the last 14 years! Finally, Ford fans didn't have to drive something that was the butt of every diesel joke out there. For the first time, since the old IDI engine, the fuel system was built on a common rail design rather than the HEUI design (Hydraulic Electronic Unit Injector). When the 6.4L Super Duty was first introduced, it was nothing short of a game-changer for Ford owners. The F-250 through F-550 came out the gate boasting a stout 6.4L Powerstroke engine built by International. In 2007, halfway through the year, Ford Motor Company introduced its latest Super Duty F-Series trucks.
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