I came across an old article on Autoblog describing the early pdk's. The article suggests that you can disengaged the front drive axle on all PDK equipped c4 and c4s'; it does indicate whether the turbos can accomplish the trick. Can anyone who has applied the technique detail any problems or Joy with this feature. I found several press points on-line but no video, hence the request. Maybe the Porsche engineers changed the recent PDK to eliminate the feature ?

from AutoBlog : November 2008
The guys at Garage 419 found out from Porsche engineers that front-wheel drive can be disabled entirely by lifting up the parking brake a single notch. Once you lift up that brake, the four-wheel-drive Carerra 4 becomes a Carrera 2 and power slides and donuts are yours to discover.


from 911uk.com : Nov. 2008
By pulling up on the hand brake just one notch it's not the parking brake that comes on but what this Porsche actually does is disengage the front axle. Thereby turning the 997 (with a wink and nod) into a rear-wheel drive power slide maker.

 

So we tried this disengagement and in fact it works. The tail of the '09 c4s, now in rear wheel only, swung right and than slightly left, just as the limited slip engaged and the traction caught burning out at the rears only for about 3 feet.

Hooning in rear wheel only followed the test. Just a bit surprised how much fun rubber slipping on tarmac can be.

All of you awd pcar owners, try it, you may like it !

 

Your post actually intrigued me. So I did some internet searching this morning. I believe that 997.1 cars do not have this 'disengage' feature. Mine is a 2007.

I hope I am wrong about the info above.

Oh, and that brake light dash error just bugged the heck out of me.

 

I think the feature is only on the pdk equipped c4 and c4s. I couldn't find any followup on the turbos.

The affect was nearly identical to the 991 c2s I test drove. Nearly the same slipping. So it begs a question : Why did the Engineers create this feature ?

Any c4s 991 drivers attempt the disengagement ?

PDK trans. can disengage front axle ?
I came across an old article on Autoblog describing the early pdk's. The article suggests that you can disengaged the front drive axle on all PDK equipped c4 and c4s'; it does indicate whether the turbos can accomplish the trick. Can anyone who has applied the technique detail any problems or Joy with this feature. I found several press points on-line but no video, hence the request. Maybe the Porsche engineers changed the recent PDK to eliminate the feature ?

from AutoBlog : November 2008
The guys at Garage 419 found out from Porsche engineers that front-wheel drive can be disabled entirely by lifting up the parking brake a single notch. Once you lift up that brake, the four-wheel-drive Carerra 4 becomes a Carrera 2 and power slides and donuts are yours to discover.


from 911uk.com : Nov. 2008
By pulling up on the hand brake just one notch it's not the parking brake that comes on but what this Porsche actually does is disengage the front axle. Thereby turning the 997 (with a wink and nod) into a rear-wheel drive power slide maker.

 

The 997.1 uses a fixed multi-disc viscous coupling to the front that is always engaged and has no way of being disengaged.

 

yup... so I found out too. It was just a 'wish' that this would also be applicable to the 997.1


Oh well... I like the 4wd. Saved me 3x already.

I'll use the SC cab if I want 2 wheel drive.