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Ford updates Power Stroke diesel V8, strengthens F-450, tweaks King Ranch

Ford is giving its F-Series Super Duty trucks some upgrades for 2015, and we're happy to say that one of them is an improved Power Stroke diesel V8. Also, Ford is strengthening the top-of-the-line F-450 to handle more abuse. And if wild west-style luxury is your thing, the automaker has performed minor cosmetic updates to its King Ranch Edition trucks, as well.
The turbocharged 6.7-liter Power Stroke V8 is currently rated at 400 horsepower and 800 pound-feet of torque, and Ford only tells us the new and improved Power Stroke can "produce power beyond today's" engine. What, then, did Ford actually improve upon? First, the Blue Oval swapped in a new, larger turbocharger. The new Garrett GT37 turbine unit is 72.5 millimeters in diameter, eclipsing the old GT32's 64-mm diameter piece. Ford states output increases with the new turbo setup, but since the new turbocharger operates at a lower peak pressure than the old one, the automaker was able to eliminate the wastegate system and reduce the engine's complexity. Ford even redesigned the turbo's oil and cooling lines to make the powerplant simpler. A byproduct of the larger turbo is better engine exhaust braking, which is controlled manually by a button on the dashboard.
Ford claims the upgraded diesel engine is more powerful, more robust, more efficient and more refined than before.

2014 Ford Mustang GT

I was more than a year removed from my last experience with the Mustang GT and its delicious 5.0 V8 when this new 2014 example rolled up to my driveway recently. Good weather and a planned road trip across the state meant that I would get plenty of seat time in this conservatively specified example, too. In total, I logged about 400 miles in a week of driving - not a lot for some of you super commuters out there, but quite a lot for this work-from-home journalist.
The basic formula of the 5.0 has stayed the same for 2014. The 2013 model year saw a number of updates to keep the Mustang fresh until it's replaced with an all-new generation for 2015. So, for its bon voyage tour, the fifth-generation Pony Car has seen only a few modifications: a couple of new paint colors (Oxford White and Ruby Read Metallic), trim and wheel revisions and, sadly, the deletion of the Boss 302 from the Ford lineup. However, while the limited-edition Boss is likely to reappear sometime after the gen-six Mustang makes its debut in 2015, the GT Track Package cars like the one I tested provide at least a partial solution for those looking for hot laps.
Driving Notes

Ford Fiesta banned from SCCA autocrossing because of rollover risk

Autocross can be a great way to break into motorsports, especially at SCCA events that allow run-of-the-mill, street-legal vehicles to be run through the cones in parking lots across the country. But while a wide array of vehicles are eligible, not every one is. And now the Ford Fiesta has been removed from the list of qualifying vehicles in the Sports Car Club of America's Street category for solo events. The removal of the Fiesta was publicized in the latest issue of the SCCA's Fastrack News bulletin, which stated that, due to roll-over risk, Fiestas "do not meet the requirements and are to be removed" from the HS category of eligible vehicles. H Stock (or HS for short) is the lowest category of vehicles certified by the SCCA for use in sanctioned events. The disqualification applies to Fiestas from the 2011 model year onwards, and does not apply to the Fiesta ST, which remains eligible. Of course the Fiesta isn't the only model deemed ineligible for SCCA autocross events. According to Jalopnik, other small hatchbacks and crossovers including the Dodge Caliber, Fiat 500, Scion xB and iQ, Nissan Juke and Mini Countryman are also prohibited from competition. We've reached out to both Ford and the SCCA for clarification on the issue, and will issue an update if and when we receive any substantial information.