In what’s become an annual rite—and following a major update for 2012—Nissan’s GT-R supercar has once again been tweaked for the 2013 model year. The GT-R’s twin-turbocharged 3.8-liter V-6 now makes 545 hp—a 15-hp increase over the 2012 model’s 530, which was itself a 45-horse bump from the previous year. Of course, peak twist also increases, from 448 lb-ft of torque to 463. The additional power comes courtesy of enhanced intake efficiency, larger intake ducting for the intercooler, and exhaust modifications. Funk Flex