I recently read a few ads for Porsche 993.
Some of them say anti-spinning.

I've never heard of that, has anyone else?

 

Do you mean ABD? That's their traction control technology for 993's.

 

Well, that would be the Automatic Brake Differential, and in someway it is a traction control system.

It prevents a single wheel from spinning.
Also transforming power between front and rearwheels due to their wheel-rpm (I'm not too sure about this one).

As far as I know, all C4 and Turbo models had this as standard and it was optional on C2 models.

However, I dont really have any problemes spinning with my C4...

I was more wondering if there was like a true anti-spin system on the 993. Something that you have on more modern cars.

Btw, does anyone know if the ABD can be turned off and on easily in some way? I suppose this will be hard on a C4 since it probably would screw up the AWD system..

 

AFAIK, abd will use the abs system to "brake" the spinning wheel. And I'm not sure if it does this on the front or rear. Probably just the rears.

The other system is the viscous coupling which transfers power from the rear wheels to the front. I think the ratio is normally 5% to the front wheels and a max of 40% during rear wheel slippage.

 

It's a pure "software" system