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MCT (mercedes DSG/DCT) is coming...

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Old Feb 11, 2008 | 02:30 AM
  #26  
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Originally Posted by Eurosport
good luck to the first year "testers"
thanks.
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Old Feb 11, 2008 | 05:18 PM
  #27  
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Originally Posted by HLG600
First off, thanks for the links, AutoZine is a great writeup.

Something to point out though, while the link states upshifts take 8MS, downshifts require 600MS. Still, having driven a GTI with DSG...I was hooked. These transmissions are truly something else.
well there the whole rev matching throttle blipping thing going on......imo- down shifts don't matter a whole lot they just need to be smooth and not upset the car.

now what do you prefer 200 hp VeeDub at 8 ms DSG - OR 450 hp AMG at 100 ms. 0-60 time you'll save less than 1/10 sec. still need to find 20 x that (or so) haha
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Old Feb 11, 2008 | 05:33 PM
  #28  
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It took MB long enough to implement rev matched downshifts I can't imagine it be that hard to program into the TCU...its been done for a while now by others.
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Old Feb 11, 2008 | 06:09 PM
  #29  
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Originally Posted by AWDman
now what do you prefer 200 hp VeeDub at 8 ms DSG - OR 450 hp AMG at 100 ms. 0-60 time you'll save less than 1/10 sec. still need to find 20 x that (or so) haha
Haha, for the money, the GTI is tough to beat as an all around car. I am impressed with DSG because it's been around for a few years, and because it offers two useful auto settings along with a full on manual. About time AMG upped the ante with their gearbox. I laugh when people moan about them "giving up" the horsepower wars...the motors are beyond solid performers, while the gearbox is the weak spot.
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Old Feb 11, 2008 | 06:17 PM
  #30  
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Originally Posted by HLG600
Haha, for the money, the GTI is tough to beat as an all around car. I am impressed with DSG because it's been around for a few years, and because it offers two useful auto settings along with a full on manual. About time AMG upped the ante with their gearbox. I laugh when people moan about them "giving up" the horsepower wars...the motors are beyond solid performers, while the gearbox is the weak spot.
Until AMG brings a DSG to market they haven't upped the ante. This new transmission is just the old BMW SMG and that didn't appeal to me.
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Old Feb 11, 2008 | 08:19 PM
  #31  
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Originally Posted by GBlansten
Until AMG brings a DSG to market they haven't upped the ante. This new transmission is just the old BMW SMG and that didn't appeal to me.
I think its a bit more advanced than old BMW technology. True, I also would prefer a DSG-style gearbox, but this is still a good jump from the 7SP auto.
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Old Feb 11, 2008 | 10:01 PM
  #32  
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None of us really know what the hell it is yet. Lets wait to judge AFTER the car is released.
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Old Feb 11, 2008 | 10:10 PM
  #33  
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Originally Posted by HLG600
downshifts require 600MS.
You can get 8 ms downshifts too, you just need to actually press the gas and then manually downshift.

Downshifting multiple gears is a problem, especially going from even to even or odd to odd (eg, 3 to 1 or 6 to 4), I believe it actually take more than a SECOND!! I think this is one of the reasons why serious performance cars like Ferrari don't like to use it. Not even Porsche, who made the first DSG decades ago and who now owns VW.

Last edited by kevine310; Feb 11, 2008 at 10:15 PM.
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Old Feb 11, 2008 | 10:15 PM
  #34  
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Originally Posted by AWDman
now what do you prefer 200 hp VeeDub at 8 ms DSG - OR 450 hp AMG at 100 ms. 0-60 time you'll save less than 1/10 sec. still need to find 20 x that (or so) haha
What about the $1.6 Million Bugatti Veyron? Also equipped with DSG.

Imagine what 450 would be like with a DSG. They say that the 200HP GTI can "gain" the equivalent of 30HP with DSG in a drag race, that's 15%!!
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Old Feb 11, 2008 | 10:18 PM
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Originally Posted by GDawgC220
Hmmm, that's new to me. From what I've read, the DSG used in the previous generation TT had upshift times of 8ms. I assumed they used the same DSG gearbox. I know they just re-named it to S-Tronic for use in Audi vehicles.

Yes, now that I think about it, the European Audi S3 also uses a true DSG. NO idea what the website is saying then.
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Old Feb 12, 2008 | 02:17 AM
  #36  
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any one knows the shift speed of the CLK DTM's?
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Old Feb 12, 2008 | 05:28 PM
  #37  
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Originally Posted by kevine310
What about the $1.6 Million Bugatti Veyron? Also equipped with DSG.

Imagine what 450 would be like with a DSG. They say that the 200HP GTI can "gain" the equivalent of 30HP with DSG in a drag race, that's 15%!!

what about it? did you notice it's equipped with a $1.6M price tag? for than kinda money i need the car to drive itself, give me a blow job, a massage and balance my check book at the same time. forget dsg, that's the least you should expect for $1,600,000.00
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Old Feb 12, 2008 | 05:30 PM
  #38  
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Originally Posted by kevine310
Imagine what 450 would be like with a DSG. They say that the 200HP GTI can "gain" the equivalent of 30HP with DSG in a drag race, that's 15%!!

hey- dissect this one for me. make it make sense.
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Old Feb 12, 2008 | 06:34 PM
  #39  
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I would be kinda pissed about this if I just bought a CLK Black Series!
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Old Feb 12, 2008 | 08:33 PM
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Originally Posted by AWDman
hey- dissect this one for me. make it make sense.
Due to the reduction in shift times and the uninterrupted power flow from one gear to the next, a 200HP GTI will have the same drag times as a 230HP similarly weighed car with a normal transmission.

Watch this video:
http://www.youtube.com/watch?v=w56TeN9ZnCg

Notice how when he changes gears, the car stops accelerating due to loss in power, the speedo actually stops moving for a fraction of a second. The interruption in power adds up when on the track, when you're doing many gear changes. This is why DSGs are not allowed in racing!

Here's a Veyron:
http://www.youtube.com/watch?v=CWKRg...eature=related
Very little interruption in power, maybe acceleration slows for a bit, but definitely doesn't stop.

Edit: take the Veyron stuff with a grain of salt, I just found out that it's actually not 8ms shifts.

Last edited by kevine310; Feb 13, 2008 at 04:31 PM.
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