I will give that a shot. It never did this when I only had my ECU tune. It just didn’t seem like an issue of TC activating in this situation.
It is almost 100% always the traction control kicking in after or right at the shifting point. Your car will actually chirp the tires on the 1-2 shift or spin the tires slightly due to how fast the shift takes place and how fast the wheel speed is.
Since the JHM TCU Tune allows more motor power though the transmission your now getting more power out of the motor to the tires. This is why just the ECU tune alone isn’t enough to trigger this.
The adaption will depend on your driving style. Your driving time and your driving distance each time you drive. Depending on how long you’ev driven the car so far. The TCU will continue to adapt and shift faster over the next few days. The shifts should crisp up a bit more as well.
I have ECU and TCU tune as well.
ESP needs to completely off if I want to floor it, otherwise it will do exactly as you described.
The system just sees too much power and the esp shuts it off.
I’ll try it out with the traction control off tomorrow. Would have never of guessed it was hitting that hard on a shift. Thanks for the info!!
So I’ve had the TCU tune for a little bit now. The car feels drastically different now. I had the ECU tune for a few years and was not really that impressed. I know it was loaded but with the trouble I had getting it to load and having to use some different file from JHM made me think it wasn’t quite right. So when I installed the TCU tune I also reflashed the ECU as well.
Installing the TCU tune was easy and very fast compared to the ECU tune. The car felt very jerky the first few trips but has now smoothed out and shifts are much smoother while cruising. Once you get to a certain throttle position the shifts become much firmer. But a good firm. not a jolting firm. Its crazy how more drastic the 1-2 shift is. Before it was a good half second or more from when the car started its shift and ended its shift to second gear. Now its much quicker. The car immedietly shifts and its instantly accelerating again. I haven’t driven really any turbo cars but I can relate the stock tune to shifting a turbo car and you have to wait that split second for the turbo to get spooled back up between gear shifts.
One other observation is with the paddles. If you go WOT and press the upshift paddle before redline it ignores my input and goes ahead and takes the engine all the way to redline.
Also having to turn off traction control to launch the car because its activating during the first shift is somewhat annoying. Is the traction control just that sensitive to cause the car to fall on its face from even a tiny hint or wheelspin? or is it just anticipating some kind of wheel spin? I’m guessing its a huge liability for a tuner to start messing with traction control parameters.
Overall I’m very impressed. This car feel sooooo much faster from when I first got it back in 2017. Between the carbon cleaning ECU and TCU tune its almost night and day difference. I’d say the TCU tune seems to have a much more drastic change to the car than the ECU tune.
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Thanks a lot for the detailed user feedback! It mirrors my experiences with @Kimovitzh tuned S6 as well. The ECU tune is noticable but its not a huge “butt dyno” difference IMO. But that TCU tune and the new gearbox shifts makes a world of a difference to the overall feel of the car. 
I finally put my first few miles on mine with gutted headers and stage 2 tune w/ the 7300 tcu tune and omfg car is night and day difference. I also am at almost a mile elevation, but the car just hauls ass and sings! Feels similar to a 400hp sedan at sealevel imo, like the old srt8 300. Just what I was looking for when I traded up from my d3 4.2, that missing power. Amaizing work to JHM tuner
I sort of wish D was a little smoother than S, as if there was a larger difference in performance between the two, letting my girl drive the S6 now is going to take some training lol
Would be neat if S gave us a 2k stall and D was normal 
The ECU tune adds a ton of Hp and since Hp is harder to feel than TQ. So it can be missleading.
Before the JHM TCU option was made mainstream and lets not forget that JHM actually build an infrastructure just for this that originally started just for this car. But before the JHM TCU option the ECU tune would knock a solid .6 off the 1/4 mile and add a ton of MPH…
Once you add the TCU tune the Tq converter in the transmission now allows more TQ and that’s impossible to not feel. It’s really best you do them at the same time for the full effect. Since you can’t feel hp the same way you can feel TQ. This is why the TCU can for some be the bigger feel. Either way as we’ve all said. If you want to transform the S6 into an R8 do both the JHM TCU and ECU tune…
I’m just happy that we still have a company that is interested and listening to such a great platform even tho is so small.
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I agree we are lucky to have a company still supporting these cars and more and more die off to junkyards daily and they become enthusiast only cars. I dont plan on selling mine anytime soon that’s for sure. I just love the aggressiveness of this thing now it feels like the s6 v10 audi intended. Its raw and fast just how I’d imagined it should be.
One observation I’ve had is when the car shifts from 1st to 2nd at WOT… I turn off traction control and that helps. Also noticed that with the ECU tune it now revs to 7300 before it shifts. When it shifts from 1st to 2nd its almost like it hits a rev limiter during the shift. Its not the same as traction control cutting in like I’ve mentioned before. And everything is happening so fast that it hard to judge what’s really going on.
Almost like a stumble right when the shift is happening and its not too smooth at all.
Any ideas?
Well from what I understand. Unless your ECU stage 2 tune and that would mean you have no cats you don’t have the ECU file to work with the stage 2 TCU file. So I would make sure you check to make sure you have the right ECU file to go with the TCU file you have
When I did all this recently I did not even see an option for any Stage 2 files. and for the TCU all I saw was a “Stock” file and a “Performance” file. If i’m remembering this all correctly. Can I verify what I have somehow?
You can log in to the flash server and see what TCU file you have. I think it’ll show you the current file you have on your car.
Or you can email JHM and have them help. They will know what version you have and if it’s the right one. Seems like unless your stage 2+ with no cats your shifting past what the normal cars shift at.