Does DCT allow you to go into the red?

[conradb]

I was racing on the Nurburgring when I first hit redline on my car after 2000km break-in. The dealer told me the DCT auto upshifts when it hits the redline. I was too busy on the track to notice where the fuel was cutting out at. It surprised me at first and I had it cutting the fuel for a fuel seconds before I realized. Can anyone confirm the DCT does not allow you to go higher than the 8300rpm redline in the stock car? I'm just concerned if I may have hurt the engine a bit. Thanks!

[conradb]

Originally Posted by E=mc2

Current owners, please correct me if I'm wrong as I may be off by a bit with my numbers here since I still dont have my car.

The 414 hp S65, redlines in 8400 rpm, meaning you cannot rev it at 8400, the maximum you will rev is 8300 rpm. Once you reach 8300 rpm, the fuel is cut, so the engine never reaches 8400.

8300/8400 close enough

This answers my question

[jmflukeiii]

Originally Posted by E=mc2

So technically you actually never "redline", you "yellow line" it all the way to the end, "reaching" the redline, but never going over it.

Do you know if downshifting in S mode to a gear that would put you over redline is possible in DCT? Or does it say "no" and not go to the gear you're trying to make it go to?

[jmflukeiii]

Originally Posted by E=mc2

It says no. This applies to all other steptronic/manual automatic transmissions including the regular 3 and 5 series.

Thanks, I only worry that if I get trigger happy and tap the down paddle three instead of two times. Haven't done that and don't plan on it, but I figure it could happen in the heat of the moment.

Its different with a manual as you know what gear you're putting it into and hard to accidentally put it into 2nd as opposed to 3rd, for example if that's what you're aiming for. I guess you could f up and put it into first, but every manual (at least post 2001) i've driven has some sort block up so its very very hard to put it into first accidentally (or any gear that it shouldn't be going into). At least the 330ci was that way, as well as my '02 WRX.

[MSPORTWORLD]

Originally Posted by conradb

I was racing on the Nurburgring when I first hit redline on my car after 2000km break-in. The dealer told me the DCT auto upshifts when it hits the redline. I was too busy on the track to notice where the fuel was cutting out at. It surprised me at first and I had it cutting the fuel for a fuel seconds before I realized. Can anyone confirm the DCT does not allow you to go higher than the 8300rpm redline in the stock car? I'm just concerned if I may have hurt the engine a bit. Thanks!

By "racing" you mean driving?

[///M Ryder]

Originally Posted by jmflukeiii

Do you know if downshifting in S mode to a gear that would put you over redline is possible in DCT? Or does it say "no" and not go to the gear you're trying to make it go to?

Quick test.....next time you are approaching a stop light at say 40mph, downshift multiple times and watch what happens. It will lock in the gear that's safe and then allow a change when it's safe to do so......Phil

[ttt]

Originally Posted by conradb

The dealer told me the DCT auto upshifts when it hits the redline. I was too busy on the track to notice where the fuel was cutting out at. It surprised me at first and I had it cutting the fuel for a fuel seconds before I realized. Can anyone confirm the DCT does not allow you to go higher than the 8300rpm redline in the stock car?

So you'll need to put DCT in D mode for it to upshift automatically, otherwise you'll hit the fuel cutoff as you described.

<rant>I wish there's a HUD or some kind of audio signal. When I'm going full throttle, I tend to pay attention to the road ahead instead of looking at the shift light.</rant>

DCT won't let you over-rev your engine; there's no harm done.

[JuniorM3]

NO

[aus]

Many race car drivers will just bang away at the downshift paddle as they approach a turn since they know they can't do a money shift.

[jmflukeiii]

Originally Posted by ///M Ryder

Quick test.....next time you are approaching a stop light at say 40mph, downshift multiple times and watch what happens. It will lock in the gear that's safe and then allow a change when it's safe to do so......Phil

Yah just did this actually before I saw your thread on the way back from the gym. I want a supercharger.

[ersin]

Originally Posted by ttt

<rant>I wish there's a HUD or some kind of audio signal. When I'm going full throttle, I tend to pay attention to the road ahead instead of looking at the shift light.</rant>

The shift light blinks to catch your eye in peripheral vision. Using your peripheral vision is a good habit to cultivate.


Cheers.