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Switch from "S" to "D"

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Old May 30, 2008 | 09:14 PM
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Default Switch from "S" to "D"

I was wondering if anyone has tried or knows if you can switch from "S" to "D" while you are on the throttle at WOT or at least a good amount of throttle without hurting the tranny? Is "D" and "S" the same mechanical position and "S" is just a position that tells the computer to go into sport mode and enable the paddles?

Here is why I ask, say you are doing a road race and want to manually downshift for a turn but want the auto to kick back in when back on the straight away. Anyone that knows the A6 knows that once you touch the paddles it will never auto upshift again until you go out of "S" and come back. Just curious if anyone has tried it or knows the internals of the shifter. Seems to me if you could you would have the best of both worlds when handling turns when you have to slow down significantly and then have to imediately get on the gas.
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Old May 30, 2008 | 09:41 PM
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I have went from paddles to D while moving at speed and it was fine. As far as doing it on a track....I don`t know if it would hurt the tranny, but like i said, i have done it at various speeds and never felt that it was hurting anything but that doesn`t mean it isn`t.

One example was, while i was at the track testing out my new mods, i forgot to put it in S mode while making a pass down the 1/4, mid-track i relised that i was in D and pulled back to S while at speeds of about 110mph. I only did that once but i didn`t feel anything when i did it.
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Old May 30, 2008 | 09:50 PM
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Originally Posted by Tony B4
I have went from paddles to D while moving at speed and it was fine. As far as doing it on a track....I don`t know if it would hurt the tranny, but like i said, i have done it at various speeds and never felt that it was hurting anything but that doesn`t mean it isn`t.

One example was, while i was at the track testing out my new mods, i forgot to put it in S mode while making a pass down the 1/4, mid-track i relised that i was in D and pulled back to S while at speeds of about 110mph. I only did that once but i didn`t feel anything when i did it.
Tony, do you happen to remember if you were on the throttle at all? Did you hear or feel any clunk?

P.S. I lived my whole life in Youngstown, little town outside of Niagara Falls. Nice to see someone from home on the forum.
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Old May 30, 2008 | 09:55 PM
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Originally Posted by ktoonsez
Tony, do you happen to remember if you were on the throttle at all? Did you hear or feel any clunk?

P.S. I lived my whole life in Youngstown, little town outside of Niagara Falls. Nice to see someone from home on the forum.
I know where that is.

I didn`t feel anything and i was at WOT(Full throttle) going down the 1/4 track.
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Old May 30, 2008 | 11:56 PM
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Originally Posted by ktoonsez
I was wondering if anyone has tried or knows if you can switch from "S" to "D" while you are on the throttle at WOT or at least a good amount of throttle without hurting the tranny? Is "D" and "S" the same mechanical position and "S" is just a position that tells the computer to go into sport mode and enable the paddles?
Yes, you can switch back and forth between "D" and "S" any time, but I'd hesitate about doing it during WOT.

Also, there is a slight other difference between "D" and "S." In "S" without using the paddles, the tranny will hold the lower gears a little longer if the car is being driven "in a competitive manner."

2008 owner's manual, page 2-28.
While in automatic SPORT
MODE (S), the transmission computer determines when
the vehicle is being driven in a competitive manner
and will select and hold the transmission in lower gears
and have more noticeable upshifts for sportier vehicle
performance.
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Old May 31, 2008 | 12:02 AM
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Originally Posted by JimTN
Yes, you can switch back and forth between "D" and "S" any time, but I'd hesitate about doing it during WOT.

Also, there is a slight other difference between "D" and "S." In "S" without using the paddles, the tranny will hold the lower gears a little longer if the car is being driven "in a competitive manner."

2008 owner's manual, page 2-28.
Thanks for the info.
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Old May 31, 2008 | 02:17 AM
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Thanks for the info guys.
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Old May 31, 2008 | 08:28 AM
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I wish that these modes (D vs S) parameters could be changed with HP Tuners.
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Old May 31, 2008 | 10:56 AM
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Originally Posted by c6 Houston
I wish that these modes (D vs S) parameters could be changed with HP Tuners.
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Old May 31, 2008 | 11:12 AM
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Originally Posted by ktoonsez
Tony, do you happen to remember if you were on the throttle at all? Did you hear or feel any clunk?

P.S. I lived my whole life in Youngstown, little town outside of Niagara Falls. Nice to see someone from home on the forum.

There are a couple of us lurking around from Western NY

I'm hoping to have my Vette ordered in the next few weeks.
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Old May 31, 2008 | 11:58 AM
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I have done it about 100 times in the past I would put it in 2nd and go wot then bump it to D and back to S quickly.

Now I just use the paddles most of he time.
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