As DJ posted earlier today here in this forum, Porsche just announced the following in conjunction with the release of the new 991 C4S and C4:

"Driving 911 cars with a manual gearbox and Sport Chrono pack can now be even sportier: In Sport Plus mode, the system automatically double-declutches during downshifts."

Can someone here explain how that works? Should we assume it will be available on regular C2 and C2S manual transmissions too if ordered with the 'new' Sport Chrono' pack! What does the new 'sport chrono' pack cost vs the old 991 'sport chrono'...or is it just added at no extra cost?

Does this new double-declutching technology make the manual transmission more attractive now? It would seem so to me!

Saludos,
Eduardo
Carmel

 

Any manual gearbox with the words 'automatically' or 'computer' in the description is not fun.

Sent from my PG06100 using teamspeed

 

I'd imagine it's the same as you get on the Nissan 370Z.

When you depress the clutch and move the gearstick into a lower gear the car automatically blips the throttle and matches the revs.

Very cool, it's really good on the Z.

 

Like to shift manually without any tech assistance...wonder why they are going further away from the fun of shifting!

 

I wish I had this on my GTS. I've tried to learn how to Heel/Toe, but I suck...and would probably destroy the clutch if I kept trying. Something like this would help me enjoy driving it that much more.

Hmmm...maybe a decent reason to consider a switch to a 991...but a small maybe.

 

translation= more dead weight

 

Heel and toe on the street is downright very hard and at normal street speeds very jerky due to not enough brake pedal pressure. Only way to really master it is to do DE's and get a good instructor to show you how and to coach you.

 

HarveyMushroom,
Please explain where the dead weight comes from?

 

Rev-matching on the street is very easy - you don't even have to be braking to bring up the revs when downshifting in traffic. Learning how much to blip the throttle when doing this is something you can learn pretty quickly; people often complain about how the pedals of this car or that car aren't "right" for heel and toe, but I have been able to do this in any vehicle I've driven more than a few miles (modern econo car, old 911 with floor-mounted pedals, etc.) "True" heel and toe is harder to learn because you spend very little time braking that hard while driving on the street, and many drivers - even enthusiasts - spend little to no time at the track, so there's no time to learn. I suspect many posters, myself included, include rev-matching while street driving under the definition of heel and toe. I think it's a helpful habit to get into because it's safer and mechanically sympathetic if executed correctly.

 

Gene, I think he means that the systems/"gizmos", etc. that control this feature add unnecessary weight - am I correct in assuming that it will operate similarly to the 370Z system?