Direct Shift Gearbox (DSG) is simply a brand name Audi created (Much like SMG @ BMW, Manu-matic, etc). Dual clutch like Chris said above.

A sequential manual is a true manual with an electronic clutch where you can ONLY select the gears sequentially: either directly above or below the current one, no random gear access.

The paddles are just another method of shifting, taken from F1.

The new Porsche setup will most likely have a dual clutch setup as well. One clutch for even gears, one for odd. This allows two gears to be engaged at the same time, the next gear is essentially "pre-engaged" in anticipation of a gear shift so that the transfer of power is lossless and very quick. With all the electronics lately, I wouldn't be surprised if their new systems also provided an automatic rev-matching system.

 

I appreciate the descriptions of the twin versus single. What does the Bugatti have? If I recall correctly it has an Audi designed DSG, and I thought the Bugatti had a little bit more horsepower than the Audi TT (a bit more than the Porsche TT come to think of it.) So what's the issue with power vis a vis the Turbo?

 

Veyron has the DCT (dual clutch transmission) based on DSG, a 7 speed, dual liquid clutch sequential made by a company called Ricardo (in partnership with VW). Has paddles.

Ironically, if I'm not mistaken, Ricardo is actually the company that will be working with Porsche on their transmission as well (since they were involved in building GT2 and GT3 racing transmissions already). If anyone has more info on that, please post.

 

The Bugatti transmission is based on the DSG design, but built by Ricardo as stated above. The cost is astronomical, hence its only application is the Veyron for now.

The standard DSG is being adapted to longitudinal engines and more horsepower. Think back to early automatic trannies - with development came a more stout transmission. Same thing here.

As far as rev-matching, my '06 GTI w/DSG had rev-matching on downshifts. The shift times are incredible - it reminded me of a sport bike.

 

well the dsg is fun on the GTI and i can only imagine what porsche will do.......so it'll be a great piece of engineering......so it'll be fast but many guys still prefer good ol manual right???

 

I drove the Veyron with DSG and plenty of tourque and HP. It was pretty incredible and incredibly smooth. Will be awesome in the Turbo!

 

On a P-car it'll be a tough choice since the manual feels so mechanical, so precise. On a car like the GTI, it was a no-brainer to go for it...

There is NO WAY a manual car can keep up with a DSG car (like for like). The shifts are seamless and lightning quick. A 997TT w/DSG will be something like 3.2 0-60. I bet a 997S would be under 4 sec to 60 w/DSG as well.

 

I agree... 997Turbo with DSG may hit a 10 second quarter mile STOCK

The only time i've seen so far was 11.4 in conditions less than favorable. I believe that was the tip.

 

summary of what has been said here, with a few typos

http://car-reviews.automobile.com/ne...-gearbox/2008/

 

This apparently is a photo of it from Porsche NA (although I can't find the image anywhere on their site so take it with some salt).

 

That is similar to the Audi design - concentric clutches...

 

Anyone know when you can put an order in on the 997 tt with the dsg?

 

They haven't even officially announced the gearbox so I'm assuming it will be a while.

Last date I heard was that it will be available Spring of 07 but I wouldn't count on it.

 

I got this weeks Autocar magazine yesterday and there was a blurb on it...quote:

Porsche's overdue DSG double clutch gearbox has surfaced again, this time in a patent drawing found online by autocar. Initially meant for the 997 generation 911, the new gearbox was then due to be fitted to the new turbo, but porsche research and development chief Wolfgang Durheimer told autocar that the transmission was still under development. "When we can't improve the tiptronic system, well start to use the DSG" he said.

 

So does a sequential manual have a stick or paddels? And it does it have a clutch pedal or no? Whats the difference between the electronic clutch and hydrolic?

If im understanding right, your saying sequenial maunual is the same thing as a regular manual but with an electronic clutch to avoid selecting the wrong gear? Whats the point of the seqenial? to avoid misshifts i guess?

Sorry for some many questions, but id dont know and would like to know the differences,

thanks.