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I did on my truck for a short period of time. My mileage suffered considerably. It sounds good, but drones like crazy at around 2k rpm. I've heard that the turbo creates enough back pressure for the engine but I don't know how true that is.
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.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
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