Ford's offering a reflash upgrade to their 6.7-liter Powerstroke-equipped 2011 Ford F-Series Super Duty good for 400-hp and a bonkers 800 lb-ft of torque. Mike Levine over at PickupTrucks.com tossed one on a dyno to confirm the results. Chart below.
Kinja is in read-only mode. We are working to restore service.