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      02-24-2021, 07:06 PM   #1
ghost_m2c
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Paddle shifter cuttoff?

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Is there anything preventing you from downshifting to a dangerous rpm on the 7 speed DCT? Would rather not find out by accidently downshifting at 6k and the transmission shitting the bed.
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      02-24-2021, 07:11 PM   #2
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Yes. The DCT will not let you past redline. The fuel will cutoff if you do, and there is no money shift.
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      02-24-2021, 09:43 PM   #3
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Quote:
Originally Posted by ghost_m2c View Post
Is there anything preventing you from downshifting to a dangerous rpm on the 7 speed DCT? Would rather not find out by accidently downshifting at 6k and the transmission shitting the bed.
S is Sequential modeUse the shift paddles or the selector lever to up‐shift or downshift without letting off the gas.▷ Shortly before falling below a gear-dependentminimum speed, the transmission is automat‐ically downshifted.▷ Upshifting or downshifting is done only if therpm and vehicle speed are appropriate.E.g., there is no downshifting if the enginespeed is too high.▷ Kickdown: the lowest possible gear is se‐lected by simultaneously operating the kick‐down and the left shift paddle or selectorlever.▷ It is also possible to start out in 2nd gear, forinstance on icy roads
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      02-25-2021, 08:58 AM   #4
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Quote:
Originally Posted by BigKutta View Post
Yes. The DCT will not let you past redline. The fuel will cutoff if you do, and there is no money shift.
Correct, but it will let get close to redline. I've done that unintentionally a few times, especially if I intend to downshift when slowing just as the DCT decides to downshift, eg exiting to a slow tight curve, I might want 2nd and just as I click the paddle, it downshifts to 2nd and I end up in 1st!

Or on track, I've gone 5-3 while braking into a corner and end up in 2nd. Neither is a problem but you have to be ready for the high RPMs, quick throttle and need for an upshift.
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      02-25-2021, 09:06 AM   #5
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Quote:
Originally Posted by jdubm2c View Post
S is Sequential modeUse the shift paddles or the selector lever to up‐shift or downshift without letting off the gas.▷ Shortly before falling below a gear-dependentminimum speed, the transmission is automat‐ically downshifted.▷ Upshifting or downshifting is done only if therpm and vehicle speed are appropriate.E.g., there is no downshifting if the enginespeed is too high.▷ Kickdown: the lowest possible gear is se‐lected by simultaneously operating the kick‐down and the left shift paddle or selectorlever.▷ It is also possible to start out in 2nd gear, forinstance on icy roads
It will also use 2nd on a "California stop" Eg exiting an interstate, it will downshift to 2nd as you come to a stop, but if you go immediately or roll through, it will still be in 2nd, not having the time to drop to first. The M2C has plenty of torque to do this, but you won't get a neck snapping pull away from the stop until it revs a bit.
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      02-25-2021, 03:12 PM   #6
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Quote:
Originally Posted by ghost_m2c View Post
Is there anything preventing you from downshifting to a dangerous rpm on the 7 speed DCT? Would rather not find out by accidently downshifting at 6k and the transmission shitting the bed.
The computer won't allow it, it's idiot proof.

Remember you don't control a DCT box, the computer does.

When you flick a paddle you are just kindly asking the computer if it will change gear for you please, after it's done about a 1000 calculations and checks first.

If you want to money shift or trash your gears the only way is to get a manual!

Last edited by doughboy; 02-25-2021 at 03:20 PM..
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      02-25-2021, 04:55 PM   #7
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Quote:
Originally Posted by doughboy View Post
When you flick a paddle you are just kindly asking the computer if it will change gear for you please, after it's done about a 1000 calculations and checks first.
LOL! Awesome!
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      02-26-2021, 02:06 PM   #8
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Quote:
Originally Posted by doughboy View Post
The computer won't allow it, it's idiot proof.

Remember you don't control a DCT box, the computer does.

When you flick a paddle you are just kindly asking the computer if it will change gear for you please, after it's done about a 1000 calculations and checks first.

If you want to money shift or trash your gears the only way is to get a manual!
Pretty much everything is drive by wire these days. EPS steering, throttle control, even the M8 brakes.

PS: They could do a "manual transmission" that merely uses the gear shift and clutch to tell the computer what you want to do and the DCT takes over. Would purists go for that?
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      02-26-2021, 02:28 PM   #9
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Quote:
Originally Posted by richard in NC View Post
Pretty much everything is drive by wire these days. EPS steering, throttle control, even the M8 brakes.

PS: They could do a "manual transmission" that merely uses the gear shift and clutch to tell the computer what you want to do and the DCT takes over. Would purists go for that?
Yep you're right. But EPS isn't steer by wire. Still a direct mechanical link from steering wheel to rack and wheels. Only the assistance is electric.

Wouldn't be a manual then? The whole point of a manual is that it's a bit slow and clunky and hard work. Takes practice and effort to get it just right over years of use.

Put a computer in there and the whole point is lost.

Oops. No auto\manual debates

Last edited by doughboy; 02-26-2021 at 03:26 PM..
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      03-14-2021, 01:48 PM   #10
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My experience on the track with the DTC is it is the ability to do the over-rev downshift is pretty bullet proof. I occasionally lose track of what gear I am in entering a corner and if the potential rpm's are too high while trying to downshift it won't shift. I try to keep rpm's in the 5000-7000 range but, like I said, a brain fart sometimes has me trying to downshift when I should not. I never got the hang of heel-toe shifting and this DCT is so very helpful in shifting down or up when you want it and won't let you when you shouldn't. Compared to my previous track car, a 2008 Z4 3.0si with a manual transmission, it is almost like cheating. I really like this transmission for the track. Not so much, yet, for autocross though.
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