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-   -   Bouncing off redline in 7AT? (https://www.myg37.com/forums/engine-drivetrain-and-forced-induction/252858-bouncing-off-redline-in-7at.html)

MP87 11-16-2013 07:46 PM

Bouncing off redline in 7AT?
 
I tried searching for the answer to this question but I couldn't find it! I'm sure it has been asked before but I had no luck in searching. I swear I tried!

The question is: if I put my 7AT into manual mode and redline a gear, will the transmission automatically shift at redline or will it just keep the engine bouncing off the redline until I shift it?

I didnt feel comfortable running an experiment so I thought I would ask lol.

GoFightNguyen 11-16-2013 07:51 PM

It'll bounce off redline. It'll downshift to keep you from stalling if the revs drop but it does not up shift. You get to be race car-y. Brrrr-RR-RR-RR!

MP87 11-16-2013 08:03 PM

Thanks for the confirmation! I'll keep that in mind during my spirited driving ;)

socketz67 11-16-2013 10:49 PM

?? In manual mode - If you are moving upward through the gears, it's my understanding that the trannie will shift into the next higher gear at redline automatically.

GoFightNguyen 11-16-2013 10:58 PM


Originally Posted by socketz67 (Post 3701963)
?? In manual mode - If you are moving upward through the gears, it's my understanding that the trannie will shift into the next higher gear at redline automatically.

It hasn't the times I've bumped against it. Have you experienced something different? Hitting the rev limiter doesn't make your engine explode, idk why everyone is so scared of it.

blnewt 11-17-2013 12:28 AM


Originally Posted by GoFightNguyen (Post 3701966)
It hasn't the times I've bumped against it. Have you experienced something different? Hitting the rev limiter doesn't make your engine explode, idk why everyone is so scared of it.

I've also never had it upshift when hitting the rev limiter, it just sounds like you accidently put your car in neutral at 7k rpm :(

blackfunk 11-17-2013 03:32 AM

The car does not upshift. As you approach redline there's a fuel cutoff that occurs that slows the car down.

GoFightNguyen 11-17-2013 09:08 AM


Originally Posted by blnewt (Post 3701981)
I've also never had it upshift when hitting the rev limiter, it just sounds like you accidently put your car in neutral at 7k rpm :(

After the uprev tune, the tuner pushed my redline to 8K revs.

socketz67 11-17-2013 09:34 AM

I've never tried it on the new 13' 7AT. However, on my 04 5AT, I thought it would shift automatically to the next highest gear. Now I'm questioning my assumption. Truth be known, I've never experimented much in this area.

Di3s3l_power 11-17-2013 10:08 AM

it will bounce of the redline, nothing bad but hitting the cutoff is like hitting a train, nothing pleasant

blackfunk 11-17-2013 10:28 AM

Believe me the soft fuel cut is preferable to the automatic upshifts i"m forced to endure when driving my S4. That upshift is the single 'feature' is hate the most in other car brands.

Something else that I love about my G37 is the fact that it does not upshift as long as the steering wheels is turned past a certain angle in sport mode. In the S4 I'm really there to provide suggestions and not really direct whats going on.

socketz67 11-17-2013 10:57 AM

From the Owner's Manual:

"In the manual shift mode, the transmission may not shift to the selected gear or may automatically shift to the other gear. This helps maintain driving performance and reduces the chance of vehicle damage or loss of control."

Sounds like it could work either way?

blackfunk 11-17-2013 11:28 AM


Originally Posted by socketz67 (Post 3702041)
From the Owner's Manual:

"In the manual shift mode, the transmission may not shift to the selected gear or may automatically shift to the other gear. This helps maintain driving performance and reduces the chance of vehicle damage or loss of control."

Sounds like it could work either way?

I think this is referring to going to temporary manual mode from D or when the car will drop down in gears while slowing. It will also prevent you from upshifting to a higher gear to prevent you from lugging the engine.

I've hit redline enough to know it won't upshift at redline.

ANMVQ 11-19-2013 02:45 PM

Will not up shift an I love that , I used to bounce of it a lot the first few weeks I had my SC , cause is ramped up so fast , the TB'S will just close and the car will fall on its face :/

Tazicon 11-19-2013 02:49 PM

The newer transmissions will jump up gears. I think they started that in 2013, neither of my 2011 Z or G would upshift in manual mode. Down shift yes but not upshift.


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