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Jan 11, 2021 | 03:06 PM

#11

gk1

AudiWorld Super User

Joined: Jan 2001

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From: NJ->CO

Quote:

Originally Posted by Golan Remi

@MP4.2+6.0 I have a 2017 A8L 4.0. My top RPM 6K but not 6.5K like yours. Is that only an S8 option or did you customize it?
Also when my car is cold the top RPM is 5.5K and will change to 6K when it reaches normal temp. Is that Normal?

The CEUA variant used in the A8 is 6000. (max warm engine redline)
The CEUC and CGTA etc. used in the S6/S7 and S8 are 6400.
FWIW I think the RS7 is 6600 and the RS7P is 6800.

Jan 11, 2021 | 05:24 PM

#12

VirTERM

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Joined: Jul 2004

Posts: 526

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From: Ottawa

Will this work on MY21 Q5?

Jan 11, 2021 | 05:57 PM

#13

MP4.2+6.0

Thread Starter

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Joined: Oct 2001

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From: SF Bay Area, CA

Quote:

Originally Posted by Golan Remi

Mine is a 2015 S8 and is stock. As mentioned, the pre + S8 redline shows as 6400 on the display.

Yes, the lower redline display while cold/warming up is normal. I have the same. It's a good feature, since you want oil circulating well and thus warmed up when you push it. I don't push mine cold and it hits operating temp pretty quickly anyway in my mild CA coastal climate. Thus I have never really tested it to see if it actually shifts early at the lower indicated redline point when cold (5400 on my S8).

On this part of thread about redline, what I haven't looked at in a while either is where it actually shifts when at operating temp. The first couple gears go so fast you really have very little chance to see it visually at full throttle. I have never run a VCDS monitored data stream to see what it reports specifically. To some of the reply discussion, my guess is w/ tune redline still stays where it was, and tranny computer would probably need to be modded/recoded to change that.

Last edited by MP4.2+6.0; Jan 12, 2021 at 04:30 PM.

Jan 12, 2021 | 04:28 AM

#14

Mike911A8

AudiWorld Member

Joined: Feb 2007

Posts: 578

Likes: 120

From: Harrisburg, Pa.

Quote:

Originally Posted by gk1

The CEUA variant used in the A8 is 6000. (max warm engine redline)
The CEUC and CGTA etc. used in the S6/S7 and S8 are 6400.
FWIW I think the RS7 is 6600 and the RS7P is 6800.

I can add that the S8+ top RPM is 6800. Mike

Jan 12, 2021 | 07:00 AM

#15

MP4.2+6.0

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From: SF Bay Area, CA

Quote:

Originally Posted by Mike911A8

I can add that the S8+ top RPM is 6800. Mike

... yep. Which I think is likely where the valve shim/bounce issue is coming from (or at least aggravating it) on +'s.

To earlier questions and tying to other threads, the sobering revelation about the valve shim problem on cylinder 5 has cooled any favorable interest I had earlier on higher RPM cut off on this motor in stock configuration.

Last edited by MP4.2+6.0; Jan 12, 2021 at 07:06 AM.

Jan 12, 2021 | 07:09 AM

#16

MP4.2+6.0

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From: SF Bay Area, CA

Quote:

Originally Posted by VirTERM

Will this work on MY21 Q5?

No idea. Platform origins (B vs D) are different, as are comparable generations of tech (gen 2 Q5 is one newer than D4)

Jan 12, 2021 | 04:15 PM

#17

16Boost

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Joined: Jan 2021

Posts: 286

Likes: 94

From: Pa/De line

Quote:

Originally Posted by JackCheung

Thank you for the information!
I did the same set up on my 2018 S8 Plus. But I don't know why, the gear shift indicator won't show up in the screen when I put it into M mode.
Do you know what's wrong with my car?
Thank you!

I have the same issue with my 16 plus, I believe if you have HUD the shift light does not work.

@MP4.2+6.0 what is the COD display? I usually just look at the factory consumption and then see if that bar is green.