The memo that the Focus RS has enough power seems to have never reached the gasoline- and nitrous-addled minds at Hennessey Performance, who boosted the Focus RS' output to 405 hp and 425 lb-ft of torque.The stock 2017 Ford Focus RS develops around 350 hp and 350 lb-ft of torque, which is not enough for Texas, apparently.
Hennessey's HPE400 package for the Focus RS consists of a reflashed ECU, a high-flow air filter, and a stainless steel exhaust upgrade with electronic dumps to increase the four-cylinder's already loud exhaust note. Customers also get Hennessey and HPE400 exterior badges along with a Powered by Hennessey badge under the hood.
The company hasn't released any performance statistics yet. The stock Focus RS can hit 60 mph in an already-quick 4.6 seconds, and we're sure that Hennessey's extra 50 hp and 75 lb-ft of torque will bring that below the 4.5 second mark.
Additionally, Hennessey Performance states that the company will also offer intercooler, turbo, wheels, tires, and other upgrades in the future, although there's not much information on what those upgrades will be or how much horsepower the car will make after they are installed. From our brief glances from under the car, it seems as if Hennessey will also have to upgrade the driveshaft, axles, and rear differential to cope with any more horsepower.
As well as not releasing performance numbers, Hennessey is also keeping the price of the HPE400 package under wraps. Given Hennessey's past pricing for other projects, don't expect the HPE400 upgrade to be as frugal as the price tag for the Focus RS.