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2015 GMC Canyon Nightfall Edition rumbles in under the radar

Buyers enticed by the new 2015 GMC Canyon will want to take a look at the new Nightfall Edition. Unveiled here on the floor of the 2015 Detroit Auto Show, the Nightfall is based on the mid-level SLE trim level in four-door crew cab bodystyle, but upgrades with a stealthy appearance and bundled extras. It's decked out in Onyx Black paint, for starters, but also has a blacked-out grille and side steps, a spray-in bedliner and 18-inch wheels with darkened inserts, as well as a polished exhaust tip, remote start and automatic climate control fitted as standard. The only choice left up to the buyer of this murdered-out mid-size pickup is whether to get it in 2WD or 4WD. Either way, motivation is provided by the Canyon's 3.6-liter V6 with its 305 horsepower and 269 pound-feet of torque. Pricing has yet to be announced, but considering that the SLE on which it's based starts at $30,980 and that the SLT comes in at $34,345, we'd expect the Nightfall to be positioned in the low 30s, with another few grand for four-wheel drive. Featured Gallery 2015 GMC Canyon Nightfall: Detroit View 13 Photos Image Credit: Live photos copyright 2015 Drew Phillips / AOL Detroit Auto Show GMC Truck Detroit 2015 Detroit Auto Show gmc canyon

Supercharged 2015 GMC Yukon Denali sounds evil, runs 0-60 in 4.5 seconds

Speeding along in a sports car is undoubtedly a ton of fun, but some owners need the ability to carry a lot of people and their stuff and don't want to sacrifice the ability to put the power down. The tuners over at Hennessey have that demographic covered with their growling, supercharged power kits for the GMC Yukon Denali. The upgrades come in three forms for the SUV's 6.2-liter V8: HPE550 with 557 horsepower, HPE600 with 605 hp and HPE650 with 665 hp. This video showcases the full-bore version, and this Denali can definitely hustle in a straight line. The power bump comes courtesy of a 2.9-liter supercharger, intercooler and high-flow cylinder heads to add over 200 horsepower compared to stock, and the final result is a bellowing SUV that rears up off he line to throw the driver back into the seat. The sprint to 60 miles per hour lasts just 4.5 seconds. Check out this hasty hauler in action in the video above.

Diesel Power finds the ultimate modified oil-burner

For nine years, Diesel Power magazine has run the Diesel Power Challenge, this year's grindfest being "a week-long torture test that features seven events, nine trucks, 8,000 horsepower, and nearly 15,000 pound-feet of torque." The road to being crowned "the most powerful truck" starts with a dyno run, and then continues through the completion of a CDL-style obstacle course, an eighth-of-a-mile drag race while towing a 10,000-pound trailer, a quarter-mile drag race without a trailer, a fuel economy test in the mountains and finally a sled-pulling test through a 300-foot-long packed-mud pit.
What kind of trucks get into such a fight? Last year's winner, for instance - who upgraded his truck this year to prove he didn't "luck into the win" - drives a 2008 Ford F-250 Super Duty with a 6.4-liter Power Stroke V8 upgraded with a custom intake, Elite Diesel triple turbos and a two-stage nitrous system. Another competitor has a 2005 Dodge Ram 2500 powered by a 5.9-liter Cummins inline-six, upgraded with Garrett turbos, dual-stage nitrous, a seven-inch exhaust stack and twin fans built into the bed to cool the Sun Coast Omega transmission. The numbers on that truck: 1,255 horsepower, and 2,063 pound-feet of torque at the wheels. Naturally, as the image above might suggest, things don't always end well.
You'll find all five videos covering this years challenge below. A scene in the dyno video sums it all up perfectly: a competitor leaves his nitrous on too long and the crew is treated to some ominous poppings, he leans out the window, throws both hands up and shouts, "Amer'ca!"