So if the stock McLaren MP4-12C’s 616 hp isn’t good enough for you, Hennessey has you covered: They’ve managed to boost the horsepower to 704. They made tweaks to the engine management software, upgraded the intercooler, and added stainless steel exhaust system and dual air induction filters. Hennessey claims the car now does 0-60 mph in 2.8 seconds and runs the quarter in 10.3 seconds at 137 mph.
