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2014 Jaguar XKR-S GT claws at the driving enthusiast in us

If you still find yourself coming up a few seconds short per lap in your Jaguar XKR-S, the British automaker has introduced the XKR-S GT - a cat specifically tuned for the racing circuit - at the New York Auto Show.
While Jaguar has left the supercharged 5.0-liter V8 unchanged (550 horsepower and 502 pound-feet of torque), it has tuned and tweaked all the items that really make cars go quicker on the track (e.g. suspension, aerodynamics, contact patches, brakes). A once-over reveals upgraded go-fast goodies including a new ventilated hood, extended wheel arch spats, reworked front end with a bespoke front splitter and canards, a massive rear wing, height-adjustable adaptive dampers, active exhaust, carbon-ceramic brakes and sticky Pirelli Corsa tires. Try as we might, the driver in us can't find anything we not to like about this enthusiast-tuned coupe.
Of course all of the upgraded XK goodness doesn't come easy, or cheap. Jaguar will limit North American sales to just 30 units and price each at $174,000. Learn all the juicy details in the official press release below.

Is the Jaguar XFR-S really worth $17k more than the XFR? [w/poll]

Adding performance to a car is rarely cheap - whether you're looking to do it yourself or rely on the factory to do it for you. In the case of the new Jaguar XFR-S, the cost differential over an already-impressive (and somewhat expensive) XFR is a stout $16,800. Auto Express recently got a hold of both cars to see whether that price pays off on the track.
For that price, Jaguar gives the XFR-S an extra 40 horsepower and 41 pound-feet of torque - for a total of 550 hp and 502 lb-ft - to go with a stiffer suspension, beefed-up differential and, of course, meaner styling. We don't want to ruin the results of the AE video, but right off the bat, the host says that you can feel the extra power of the XFR-S, but that it's not a "night-and-day difference."
Scroll down to see what happens when two high-powered Jags go head-to-head on a track. And then be sure to let us know whether or not you think the added money is worth it for the XFR-S in the completely informal poll below.

Jaguar Land Rover offers (some) detail about new Ingenium engine

Jaguar Land Rover officially announced its Ingenium family of engines with the unveiling of the 2.0-liter version in the Jaguar XE concept at the 2014 Geneva Motor Show, but it kept details very thin at the time. All we knew was that the new turbocharged mills could be configured to use gasoline or diesel, and be positioned longitudinally or transversely. Months later, JLR is finally letting some more info slip about its new baby, but there are still some big questions to be answered.
For the Ingenium project, Jaguar Land Rover gave its engineers a clean sheet of paper and told them not to worry about using any previous parts or machinery. In the end, the designers came up with a family of turbocharged, aluminum-block engines based around modular, 500cc cylinders to allow it to grow or shrink as the market demanded. The layout was also made adaptable enough to incorporate hybrid drivetrains, if needed. "Being configurable and flexible are the two key strands of Ingenium's DNA because we have future-proofed our new engines from the outset," said said Ron Lee, the company's director of Powertrain Engineering.
To maximize efficiency, Jaguar promises that all versions of the Ingenium engines come with computer-controlled, variable oil pumps and water pumps to use only as much energy as needed. They also get direct injection, roller bearings for the cams and stop/start. The diesel version alone has 17 percent less internal friction than the mill it replaces, the company claims. JLR is also promising class-leading figures for Ingenium's torque and horsepower too, but it's not giving away those specs just yet.