[Stingray]

Plus another key strength to the Z51's track capabilities is the awesome e-diff!

http://www.edmunds.com/car-reviews/t...alkaround.html

"The centerpiece of the Stingray Z51, the component that does more to explain its elevated performance than any other single change, is hidden above the spring and surrounded by some beautiful component packaging. It's a new electronic limited-slip differential, but GM calls it an eLSD for short.

In reality it's an electronically controlled hydraulic wet multiplate clutch pack. It's able to run fully open (zero torque resistance), virtually locked (2,000 Newton-meters, a.k.a. 1,475 pound-feet of resistance) and any point in between. Though it's impossible to feel it working, the eLSD is making adjustments every 11 milliseconds based on feedback from the steering, suspension, ESC, powertrain management system and a new patented tire temperature sensing system.

And so the Corvette Z51 turns eagerly into the tightest autocross corners, hunting apexes as if on a search-and-destroy mission. The tail stays in line midcorner as we add throttle and it doesn't kick out on exit unless we get really stupid with the throttle with all the nannies turned off in Race mode. A lot of what we like about the C7 Z51 has to do with this eLSD.

Here's what the eLSD and the hydraulic pump look like out of the car. My yellow arrow is pointing out the multiplate wet clutch that regulates the tightness of the differential action. The continuously variable clamping force it generates is where the resistive torque between the left and right rear tires comes from.

That clamping force is produced by hydraulic pressure that's generated by the pump in the foreground and throttled by control valves that are managed by an ECU that sits in close proximity. This ECU does not act alone, though; it gets additional guidance from the main powertrain ECU and other subsystems."