ZCD2.7T

Another couple of data points to add to this discussion: Had my 35k service done yesterday, mentioned the TSBs (showed them the numbers) for the ECU and TCU, complained about harsh downshifts in Dynamic mode. They updated the TCU software from 4G1927156S version 009 to version 010.:





(sorry for the shadow - harsh lighting in the service writer's area)

They did not perform the ECU update that I requested - maybe I didn't "complain correctly".

The upshot is that the trans performance seems changed for the better - seems to hold gears a bit longer in "Auto" mode, and seems more eager to downshift. MUCH smoother downshifts in Dynamic mode when rolling to a stop - to me, it simply seems that the rev-matching is better for those downshifts. Somehow, the car also feels more responsive to part throttle inputs overall, but that could be placebo effect or just the car being in a lower gear more of the time - I'll need more seat time with the update to know for certain.

So, even though it's not the same update that many seem to have had, it has helped.

Mattsam

Got my software update from 06 to 07 and the throttle lag is GONE!!

Its so noticeable I nearly sideswiped a car leaving the dealership when the car took off when in normally hesitated

If you are on ECU #6 in the 2013 insist that they move it to at least #7

cschmelz

I went for the first time to my dealer (with my 2013 which is new to me) and they did a great job.

ECU from 06 to 08

TCU from something (don't recall) to 11.

It is like a brand new car, super responsive to the throttle and drivable now in sport mode now that the harsh 2-1 downshift is gone!

WOOHOO!

Thank you Overturf Audi for doing the right thing and making this easy!

ZCD2.7T

Update: Took my '13 S6 to a different dealer and asked them to update the ECM and TCM software to the "latest and greatest" version of each. Shop foreman rode with me to witness/verify the throttle lag after a slow roll, which he verified was a real thing.

Text from the Word doc the dealer gave me verifying what had been done:
-----------------------------------
(TCM)
Test step: Changes performed
Campaign: MESSAGE
Output: The following changes determined by Software Version Management (SVM) have been performed:

Program updates:
02 - Transmission Electronics:
4G1927156S ; 0011 -> 4G1927156S ; 0013

(ECM)
Test step: Changes performed
Campaign: MESSAGE
Output: The following changes determined by Software Version Management (SVM) have been performed:

Program updates:
01 - Engine Electronics:
4G0906014B ; 0006 -> 4G0906014B ; 0008
-------------------------------------

Unlike the previous dealer, this dealer (Audi Exchange in Highland Park, IL) had no problem with performing these updates "just because I asked for them". The car is just about to go out of the OEM warranty, so that's why I wanted this taken care of at this time. This time, the service provided felt like what I'd expect from a luxury brand - they were more than willing to do what it took to make me happy, even though I didn't buy the car from them.

As for the way the car now drives, I'll echo what many others have said - the car FINALLY performs the way a near-500hp sedan should, at all times. Throttle lag is gone, and the engine/transmission response, even from a dead stop, is significantly improved. It seems as if the DBW throttle mapping is much more aggressive now, meaning a small pedal input gets a much bigger response than it did previously. The first time I came out of a 90 degree turn and rolled on the throttle, expecting that pregnant pause I'd always experienced, instead a I felt an immediate rush of smooth, progressive, impressive power. It's a revelation.

To be clear, I harbor no illusions about the car actually making more power with the changes, but it's much easier to access the power the car has with the more aggressive throttle mapping.

To sum up: If your car isn't on the "latest and greatest" ECM/TCM software, ask your dealer to update it. If that dealer won't, try others until you find one that will. It's well worth the effort....

NewS6AudiFanNYC

Stupid question of the day - I have an S6 on order for May delivery. Any reason to assume it will not already come with the most updated ECM/TCM software?

ZCD2.7T

Answer: No.

parkstr8

I just started noticing the lag issue in my '16 - mainly when I had to move out of someones way quickly....and there was, like stated, as 1-2 second delay. I'll ask the dealer to see what version the software is...love the car but not this lag.

goliath1

Do you mean it just appeared and you never felt it before? I had a 2013 and got the ECU upgrade and it was fixed. I don't feel any lag in my 2016.

m444

I definitely feel a little off line throttle lag in my 2016 S6, not as bad in dynamic/sport, but it is still there. It is a disconnected feeling between the throttle and engine on initial throttle application. It is not as bad as my old 2001 S4 tiptronic, though.

The S6 is not even in the same league as the B8x S4, when it comes to off line throttle response.

I have not yet noticed any issue on the S6 with not engaging the gear for a couple of seconds, when slowing down to turn right, as I had on the S4. So that is a definite improvement over the S4 DSG.