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2018 Dodge Demon comes with a factory tune for race gas

We knew the Dodge Demon was going to make a lot of power, but the ongoing question has been how much. We've seen estimates of between 757 and 1,121, but those have simply been guesses based on the numbers found in promo photos. However, if we had to put our bets on a horsepower rating, we'll probably go with the higher estimates because the Demon can run on race gas. Yes, the latest teaser for the Demon reveals that it will come with a factory tune optimized for race gas, which is rated at 100 octane or higher. Running such high octane, in combination with its heavy-duty intake cooling, means the Demon can handle absurd amounts of boost and advanced timing without running the risk of dangerous pre-ignition or detonation. Of course this also means the Demon should be capable of astonishing power with the high-octane calibration. The tune will be included in the Demon crate on a separate engine computer that the owner can swap out when he or she is ready to race. In addition to the computer, the center stack also has a button to activate the high-octane mode. A pair of fuel pumps and larger injectors also ensure the engine gets plenty of that sweet racing fuel. When not running the high-octane tune, the Demon runs on your average premium gasoline. Also, in case you accidentally run premium gas with the high-octane mode activated, the car will automatically switch to the default tune if engine knock is detected. You can get a peek at the system in the video above, and be on the lookout for a bonus video tomorrow. The full reveal will be next week on April 11 at the New York auto show. Related Video:

Mopar '13 Dart will roll into Chicago next week

We think this officially counts as a tradition. Every year going back to 2010, Mopar has rolled out a limited edition version of a popular product from the Chrysler Group portfolio. First it was the Mopar '10 Challenger, then the Mopar '11 Charger, then last year's Mopar '12 300, and this year it will be the Mopar '13 Dart, which will make its official world debut next week at the 2013 Chicago Auto Show.
Limited in number to just 500 units, the Mopar '13 Dart is no mere appearance package, though the demeanor of the Dart will be murdered out with a gloss black finish, gloss black 18-inch wheels, a set of Mopar blue stripes and a mean-looking Mopar ground effects kit. Likewise, the interior is touched up with leather seats (a blue one for the driver and black hides for the passengers), gloss black and black chrome trim, blue accent stitching, a sport pedal kit and other Mopar interior accessories.
Turning our attention back to the mechanical bits, the Mopar '13 Dart comes with the car's most powerful engine, a turbocharged 1.4-liter MultiAir four (shared with Fiat 500 Abarth) that's paired with a manual transmission. Those big, black wheels get wrapped in low profile 225/40R18 performance tires, and keeping everything in check is an upgraded brake kit with slotted rotors. The steering has also been calibrated for performance, the suspension lowered seven millimeters, and the exhaust tuned for better engine breathing.

Old vs. New: 2014 SRT Viper takes on upgraded 16-year-old Dodge Viper

It's easy to play the "Would you rather have a New X or an Old Y with a bunch of upgrades?" game more often than we care to admit, but the crew at Car and Driver have taken bench racing to the next level with their latest video. In it, the magazine pits a brand-new 2014 SRT Viper against a highly modified 1997 Dodge Viper GTS. There are 16 years between the time this particular GTS rolled off the production line and when the new car bowed, but that doesn't mean the old snake's owners have been sitting on their hands.
Thanks to a spate of modifications, the GTS offers up a better power to weight ratio than the new machine, but is that enough to overcome the technological leap forward represented by the 2014 Viper? We won't spoil it for you. You'll just have to check out the full clip below for yourself.