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Dodge Demon's A/C helps its supercharged Hemi make more power

Staying cool is one important key to performance. Simply, more air means more power, and cool, dense air is better than hot air. While forced induction might help make copious amounts of horsepower, turbos and superchargers produce heat. Intercoolers help, but the new Dodge Demon and its supercharged Hemi need a bit of an extra boost. In Drag Mode, the Demon's engine commandeers the car's air conditioning system to help chill things out. The Demon will have the first production application of a liquid-to-air charge air cooler chiller system. Literally, the car's air conditioning system is used to cool the air going into the engine, dropping temps by up to 45 degrees Fahrenheit. Dodge claims the system helps achieve "temperatures previously unattainable by pressure-charged street-legal production vehicles." As cool as this may sound, the technology isn't new. Ford had a prototype system in the early 2000s called SuperCooler, though that system never made it to production. While the Demon's system doesn't have a super cool name like the one from Ford, the pair essentially work in the same way. In theory, it should have the same effect as a bottle of nitrous. According to Autoweek, Ford's system bumped up the output of the F-150 Lightning by about 50 horsepower. Turns out that air conditioning isn't always a huge power suck. Related Video:

Watch the Dodge Charger SRT Hellcat verify its 204-mph top speed

The industry is producing some ridiculously fast four-doors these days, from the Porsche Panamera and Maserati Quattroporte to the Mercedes E63 AMG and BMW M5. But the fastest of them all doesn't cost six figures. It doesn't even come from Europe. It's made right here in North America, by a US automaker. And it starts at under $64k. We're talking about the Dodge Charger SRT Hellcat, the Pentastar muscle sedan with the 6.2-liter supercharged V8 and its 707 horsepower. Dodge claims it's the "quickest, fastest, most powerful [production] sedan ever," and they're not just blowing smoke... or smoking tires. During the final stages of development, engineers from Auburn Hills took a bone-stock, Hellcat-powered Charger out to a seven-mile oval for a top speed run and they filmed the occasion for posterity. The result? 206.9 miles per hour with the wind, 202.2 against it, for a two-way average top speed of 204.55 mph. Chew on that, imports.

Cars.com runs 11-second quarter with Dodge Charger Hellcat

The Dodge Charger SRT Hellcat and its Challenger sibling are two of the heroes of the modern performance world. With a headline-grabbing 707 horsepower from a supercharged 6.2-liter V8, their output even shames many supercars. But how quick can one really cover a quarter mile? Cars.com recently decided to find out by taking a Charger Hellcat to the drag strip to see if the sedan lived up to Dodge's 11-second claims. The results were quite impressive. After 13 quarter-mile runs of adjusting variables like the tire pressures and the car's various electronic aids, the Charger Hellcat managed a pass in 11.03 seconds at 126.61 mph – the pinnacle result of the day. This car was mechanically stock and wore the optional Pirelli P Zero tires. According to Cars.com, other quick sprints reached 11.09 seconds and 11.1 seconds, which even beat the site's 11.41-second best from a Challenger Hellcat last year. Getting the Hellcat's prodigious power down without losing traction was a challenge, even on the summer tires. Cars.com thought it had a run that could have dropped below 11 seconds, but then the wheels spun. Using the factory-recommended pressures, the Charger Hellcat was no still slouch with an 11.27-second time recorded, but taking things down to 25 psi proved the quickest at the strip. We already knew that the Charger Hellcat was a wonderful vehicle for eating up huge gulps of asphalt at high speeds and could verify its 204-mile-per-hour top speed (quite a bit faster, incidentally, than the Ferrari California T's 196 mph top-speed). Apparently, the 11-second quarter-mile claim is just as accurate. Also, for any curious owners, the Cars.com story divulges many of the tweaks required to reach this seriously quick time. Related Video: