2008 Ford Super Duty Power Stroke - 104 More Horsepower!

  |   2008 Ford Super Duty Power Stroke front View The new 6.4L Power Stroke offered in the '08 Ford Super Duty is full of new technology that helps it meet strict emissions standards while still offering the consumer class-leading diesel performance. However, this engine features some extremely complex electronics that provide aftermarket performance companies like Bully Dog with a whole new set of challenges when it comes to getting additional performance. Like it or not, the Power Stroke has gotten a lot more high-tech, so we visited Bully Dog to find out what it thought about the new common-rail system with piezo injectors and see what it was able to do with the new 6.4L. "The 6.4L has really challenged our engineering staff because the Siemens 64-bit processor features more checks and balances than anything we've ever seen before," said vice president of engineering, Philip Klassen. We were able to tag along as Bully Dog installed a preproduction version of its performance management tool (PMT) on a 6.4L. Easier Install
We were impressed with how easy the PMT was to install and the horsepower it was able to add to the 6.4L Power Stroke. The different displays on the gauge unit are definitely neat to play with and do a good job of displaying critical information in an easy-to-read format. The number of display options on the PMT may be a little overwhelming for some beginners, but once you decide what you want to know, the interface is easy to use and extremely informative. 396HP, 6.4L POWER STROKE SETTING HORSEPOWER TORQUE HP INCREASE TORQUE INCREASE STOCK 292 hp 286 lb-ft - - TOW 335 hp 322 lb-ft 43 hp 36 lb-ft PERFORMANCE 367 hp 332 lb-ft 75 hp 46 lb-ft EXTREME 396 hp 386 lb-ft 104 hp {{{100}}} lb-ft

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Active ReGeneration Attacks
During our testing, the truck went into its Active Regeneration mode after a few acceleration passes. Active Regeneration is Ford's way of cleaning the 6.4L's new diesel-particulate filter (DPF) mounted in the exhaust system. The DPF is required to trap soot produced by the engine to meet the current diesel emissions standards. You can think of Active Regeneration like the automatic oven-cleaning setting on your kitchen stove, except in the 6.4L, diesel fuel is injected into the engine after the main combustion to superheat the DPF. The whole process is controlled by the factory engine computer and is triggered when the DPF in the exhaust system begins to clog. We suspect the added power of the Bully Dog programmer could produce more exhaust soot and may cause the engine's computer to trigger Active Regeneration more often. How often the engine goes into Active Regeneration will depend largely on how the vehicle is driven.- David Kennedy

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