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It basically makes your gas pedal more sensitive. The same effect can be accomplished by pushing the pedal further. The dyno charts for it at 40% are exactly the same as stock at 60%. In other words, you're paying money for nothing.
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.
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