RC:
sidicks:
Leawood911:

The way you can tell you are in a manual it that it NEVER SHIFTS on its own, when you come to a stop the engine stalls if you don't push in the clutch...

So the fact that the 991 GT3 PDK-S NEVER shifts on its own when in manual mode is lost on you?  Plus of of course you can stall the PDK-S..

Now who's foolish?  Smiley

The key point of course is that IN MANUAL MODE, the gears are directly controlled by the driver 'manually' - this is why people talk about the GT3 in this way - it's totally different than a conventional automatic, which is the key point.

Smiley Exactly. Also, the difference in shifting speed/reaction of PDK in the GT3 (or even the new Turbo/S) vs. Tiptronic (the TRUE automatic transmission Porsche used in the 997.1 models and earlier) is HUGE, like day and night, both in manual and auto mode.

In Manual Mode the driver does not have direct control of the transmission.  That control still resides with the PDK controller.  

When a driver depresses a paddle to initiate a gear change, an electronic signal is sent from the paddle switch to the electronic controller for the PDK.  The electronic controller will then only begin the control sequence  for the driver requested gear change only if the request is within an allowable parametric range.  If, for any reason, the allowable parametric range is exceeded because of the requested gear change, the controller for the PDK will not perform the requested gear change.  At all times, the PDK controller, and not the driver maintains direct control of the PDK transmission.  

If, with a true manual transmission, I downshift to too low of a gear, there is nothing but the exploding engine to stop that from happening.