Click here to hear the 6.7L engine run:

http://www.dieselpowermag.com/videos/6222963/ford-67l-scorpion-v8-pilot-
injection-demo/index.html

Ford’s new 6.7L Power Stroke diesel engine (Codenamed: Scorpion) has lit up the Internet with rumors and speculation for more than a year. Now that you’ve read our online article, and seen how the engine works in the Oct. ’09 issue of Diesel Power (on sale now)—it’s time to hear the engine roar to life! Special thanks to Mile Levine of www.Pickuptrucks.com for recording the event, and sharing it with Diesel Power readers. You can read Mike's latest on the 6.7L at:

http://news.pickuptrucks.com/2009/08/first-look-fords-new-6-7-liter-v-8-scorpion-power-stroke-diesel-engine.html

 
In the video you will hear the new 6.7L Power Stroke crank and fire up in an noise vibration and harshness (NVH) dyno cell in Dearborn, Michigan. This particular dyno cell was used to refine the sound characteristics of the new Power Stroke. In the video you’ll hear Ford engineer Scott DeRaad describe the sound of the Garrett single-sequential turbocharger, and field questions about the engine design from Diesel Power editor David Kennedy, and Pickuptrucks.com’s Mike Levine

Half way into the video you’ll also hear DeRaad shut the 6.7L’s pilot injection off, in order to demonstrate just how much quieter Ford has made the new diesel by refining its calibration. For those of you that don’t know, pilot injection is a technique that sprays small amounts of fuel (a fuel droplet the size of a pinhead) into the combustion chamber ahead of the main injection event to initiate and smooth the onset of combustion. The new 6.7L Power Stroke uses two pilot injections and a main injection at idle.

You’ll be able to hear just how much louder the 6.7L engine is without the pilot injection function.  It sounds similar to the 7.3L Power Stroke. The real testament to how well this technology works comes 3 minutes into the video when the pilot injection is turned back on—and the engine quiets down to the point that you’ll have no problem ordering a hamburger at the local drive-in from the seat of the 2011 Super Duty. Enjoy.