2003 Crown Victoria Police Interceptor on 2040-cars

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Which is more fuel efficient, driving with a pickup's tailgate up or down?

Thanks to the smoke wand in the wind tunnel, you can actually see the difference in our video.
Should you drive with your pickup truck's tailgate up or down? It's an age-old controversy that's divided drivers for decades. Traditionalists will swear you should leave the tailgate down. Makes sense, right? It would seem to let the air flow more cleanly over the body and through the bed. But there's also a school of thought that argues trucks are designed to look and operate in a specific manner, and modern design techniques can help channel the airflow properly. So don't mess with all of that: Leave the tailgate up.

Next Ford Mustang to drop 400 pounds

The Ford Mustang is already the lightest of the current crop of muscle cars, at around 3,600 pounds for a GT coupe with the six-speed manual transmission. That's almost 260 pounds less than a Chevrolet Camaro SS and about 450 pounds less than a Dodge Challenger R/T, which means the Mustang has a pretty big advantage when it comes to handling, braking, accelerating and economy. More good news: The next Mustang will be even lighter.
According to a report from Edmunds, the sixth-generation Mustang, which is set to debut at the 2014 North American International Auto Show, will shed an additional 400 pounds of body fat. That 11-percent weight reduction will be thanks to lightweight materials, with a particular focus on using stronger, but less material in construction. Aluminum will feature heavily, but Edmunds' inside source warns that there is "nothing terribly exotic" coming to the original pony car.
The other big news is that the new Mustang will be smaller overall. It's going to be 15-inches shorter than the 188.5-inch Mustang on sale today, while it'll also be 6.5 inches narrower. Shorter overhangs, both in the front and rear, are also good signs for those that want an agile Mustang.

Ford offering factory-spec EcoBoost reflashes that don't void warranty*

Buy a supercharger or cold-air kit from Ford Racing and a Performance Calibration handset comes with it to reset the ECU for the upgrade. Now Ford Racing is offering the ProCal handset a la carte for $595, allowing you to reflash the ECU on your EcoBoost-equipped ride to extract more of its inherent capabilities without any additional upgrades. It gives you control of variables such as throttle response, idle speed and turbo wastegate control, among others. As for that warranty asterisk, the press release says enthusiasts can up the power "while maintaining the Ford-backed limited warranty." However Ford Motor Co. and Ford Racing are separate entities, and, best we can tell, when you reflash the ECU, your Ford warranty gets supplanted by the Ford Racing warranty. Say you bought a 2014 Ford, that means your five-year, 60,000-mile warranty becomes Ford Racing's three-year, 36,000-mile warranty, if we're reading the fine print correctly. If you have an older car and have driven more than 36,000 miles, then your warranty options are kaput, at least as far as a Ford in-house option. If have warranty concerns, you might also want to consider having a dealer perform the reflash, or at least ask about it. Once you've got past the small print, what about the numbers? At the moment Ford Racing offers tunes for the 2.0-liter EcoBoost in the Focus ST and the 1.6-liter EcoBoost in the Fiesta ST, and we're told there's a 90-pound-foot boost in torque at the crank after you've pressed the right buttons. Anecdotal evidence from a commenter at Road & Track says he went from 252 horsepower at the flywheel to 254 hp at the wheels, and 272 lb-ft at the flywheel to 354 lb-ft at the wheels, but we can't be sure that his adjustments were within Ford Racing specs. Your mileage, naturally, may vary. What about custom numbers for the 2.3-liter EcoBoost in the 2015 Ford Mustang? They aren't ready yet, but we're told we'll get something by the end of next year. Featured Gallery 2015 Ford Focus ST News Source: Ford, Ford Racing via Car and Driver Aftermarket Ford Technology ecoboost ford focus st ford fiesta st ford racing