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Ford Focus ST checks into Jay Leno's Garage

In a change of pace from the high-end vehicles that often appear in Jay Leno's Garage, Ford sends its hottest hatchback (in the US, at least), the 252-horsepower Focus ST, to be featured on Leno's show. Accompanying the five-door hatch is its chief engineer, Jamal Hameedi.
Riding on stylish 18-inch wheels with summer tires and with a spoiler that doubles as a lunch tray, Hameedi and Leno walk us through the finer points of what makes the ST special, which also includes bigger brakes, torque vectoring, a manual transmission and, of course, 252 hp and 270 pound-feet of torque from the 2.0-liter EcoBoost four-cylinder engine, which is made possible by 21 psi of turbocharged boost.
Watch the video below to see what Leno thinks of the global Focus ST.

A cool boost to turbocharger performance

Since the advent of the forced-induction engine, we have been looking for ways to get every drop of performance we can. There are many approaches to getting additional power using better intercooling, water injection, or even adding nitrous oxide. One take on a short instant burst of power is being researched by Mahle and involves providing supercooled air to an engine, which allows it to burn a leaner fuel mixture and produce more power. The supercooling idea is not new and was examined by Ford in 1993 on the Mustang Mach III concept car, then brought up again in 2003 with the SVT F-150 Lightning concept. Ford called its system the SuperCooler; it was designed to work with any turbocharged or supercharged engine equipped with a water-to-air intercooler. The system on the Lightning concept used a small tank of antifreeze that was hooked up to the truck air conditioning compressor. The air conditioning compressor cooled the antifreeze down to about 30 degrees. The other side of the tank was hooked up to the air-to-water intercooler, which usually had a temperature over 100 degrees. Once the antifreeze was circulated from the tank into the intercooler, it would lower the intercooler temperature and provide for a cooler, denser air charge into the engine; the result was around 50 extra horsepower for a burst of about 30 seconds to a minute, depending on the size of the tank. The system for the Lightning was to be offered as a $750 option and would have been targeted towards drag racers and the like, as it could be used for a run down the drag strip and then re-cooled by the time the truck was back in line. The system was fairly non-intrusive – it only weighed about 25 pounds and did not require a new compressor or intercooler. But as with many concepts, it was ultimately scrapped. The technology was always stuck in the back of my mind, but with larger and more powerful engines being produced it could not find its place. With the advent of new fuel economy standards, we have seen small-displacement turbocharged engines pop up and they seem like the perfect candidate for this type of technology. Ford's EcoBoost 1.0-liter three-cylinder turbocharged engine, as used in the Fiesta and Focus, is one such candidate for this technology. It would add a negligent amount of weight but could provide a boost of 10 to 20 horsepower when needed, like merging onto the highway or catching up to traffic.

2016 Ford Focus RS mule spotted on US soil

Okay Ford, this is what we like to see. One of our intrepid spy photographers has captured a vehicle that we weren't even sure would see the light of day - the next Focus RS. While this is pretty clearly a mule based on the current Focus ST, as our spy points out, there are a number of giveaways about this hot hatch's true nature.
Indication number one that all is not right with this Focus is the heavily camo'd front fascia, which has been completely reconfigured for duty on the RS. It boasts significantly larger grilles that are meant to accommodate what is likely the 2.3-liter, turbocharged four-cylinder that's destined for the 2015 Ford Mustang. Considering that, then, we can expect around 300 horsepower and 300 pound-feet of torque from the hottest of Foci, although it's entirely possible that the production model could climb even higher, to around 330 hp.
The front fascia tweaks are complemented in the back by a modified rear bumper, which fails at hiding a pair of exhaust tips quite unlike the standard Focus ST's center-exit exhaust. Other obvious changes include the wheel/tire/brake package on this particular car. Larger 19-inch wheels are shod in super-sticky Michelin Pilot Super Sport tires in 235/35/19 while the brakes feature what we think are four-piston calipers, possibly from Brembo, up front.