TTRS launch control issues

[Pharp]

Good afternoon!

Recently traded in my FBO S3 for a 2018 TTRS.

I saw it at an Audi dealer near me and decided I was gonna do it. The car currently has 41k miles on it. One of the big deciding factors in buying it was that @ 39k miles, the downpipe was done. I am defiantly not scared of work, but without a lift, the downpipes on these car can be a chore.

Here is a list of what was done @ 38k miles at a very reputable shop.

Stage 1 IE ECU flash
IE downpipe
IE full carbon intake

So the current issue I am having, is with launch control. In my old car, it was as simple as disabling TC or ESP, going into sport or manual mode, and then hitting the brake and the gas all the way to the bottom.
Now this car, I have been having issues with. I have followed every step I could find precisely, tried everything, and I cannot get it to “launch”.

I’ve tried it in manual, sport, everything. The issue I am having is that when I hit the brake, then hit the gas, the car doesn’t lock into a RPM, you can just control where you want it. It kind of floats where you set it, but it doesn’t just hit a wall @3500 or 4000RPM like I’ve seen in videos.

The only thing that I can consider is the issue, is the CEL. It appears that the car has a careless downpipe, but only a stage 1 tune. From my experience, 99% of the time you need to run a stage 2 tune if you’re running a cat less pipe. It has 02 codes, but I have monitored AFR’s very closely and they are damn near perfect. Any suggestions? Has the car hit its 200 launch limit? Is it because it has a ECU tune and no TCU tune ?

[TToysRuS]

Good afternoon!

Recently traded in my FBO S3 for a 2018 TTRS.

I saw it at an Audi dealer near me and decided I was gonna do it. The car currently has 41k miles on it. One of the big deciding factors in buying it was that @ 39k miles, the downpipe was done. I am defiantly not scared of work, but without a lift, the downpipes on these car can be a chore.

Here is a list of what was done @ 38k miles at a very reputable shop.

Stage 1 IE ECU flash
IE downpipe
IE full carbon intake

So the current issue I am having, is with launch control. In my old car, it was as simple as disabling TC or ESP, going into sport or manual mode, and then hitting the brake and the gas all the way to the bottom.
Now this car, I have been having issues with. I have followed every step I could find precisely, tried everything, and I cannot get it to “launch”.

I’ve tried it in manual, sport, everything. The issue I am having is that when I hit the brake, then hit the gas, the car doesn’t lock into a RPM, you can just control where you want it. It kind of floats where you set it, but it doesn’t just hit a wall @3500 or 4000RPM like I’ve seen in videos.

The only thing that I can consider is the issue, is the CEL. It appears that the car has a careless downpipe, but only a stage 1 tune. From my experience, 99% of the time you need to run a stage 2 tune if you’re running a cat less pipe. It has 02 codes, but I have monitored AFR’s very closely and they are damn near perfect. Any suggestions? Has the car hit its 200 launch limit? Is it because it has a ECU tune and no TCU tune ?

Car must be in Dynamic mode I believe with TC off (one press). Hold brake and have fun.

[Pharp]

Yes, tried this. Car just revs. I can still launch it if I let go of the brake when I get it to the RPM I want it at, but it isn’t “launch control”.

[kevin#34]

I see no relation with TCU or ECU tune/no tune, are you 100% sure of respecting the required conditions?

- warm engine
- steering wheel in straight position
- hold assist and eventual start&stop deactivated
- Dynamic mode
- ESC in sport mode (1 short press)

if still no launch, I would check via diagnostic tool how many launches have been done (02 trans, measuring blocks)

Good afternoon!

Recently traded in my FBO S3 for a 2018 TTRS.

I saw it at an Audi dealer near me and decided I was gonna do it. The car currently has 41k miles on it. One of the big deciding factors in buying it was that @ 39k miles, the downpipe was done. I am defiantly not scared of work, but without a lift, the downpipes on these car can be a chore.

Here is a list of what was done @ 38k miles at a very reputable shop.

Stage 1 IE ECU flash
IE downpipe
IE full carbon intake

So the current issue I am having, is with launch control. In my old car, it was as simple as disabling TC or ESP, going into sport or manual mode, and then hitting the brake and the gas all the way to the bottom.
Now this car, I have been having issues with. I have followed every step I could find precisely, tried everything, and I cannot get it to “launch”.

I’ve tried it in manual, sport, everything. The issue I am having is that when I hit the brake, then hit the gas, the car doesn’t lock into a RPM, you can just control where you want it. It kind of floats where you set it, but it doesn’t just hit a wall @3500 or 4000RPM like I’ve seen in videos.

The only thing that I can consider is the issue, is the CEL. It appears that the car has a careless downpipe, but only a stage 1 tune. From my experience, 99% of the time you need to run a stage 2 tune if you’re running a cat less pipe. It has 02 codes, but I have monitored AFR’s very closely and they are damn near perfect. Any suggestions? Has the car hit its 200 launch limit? Is it because it has a ECU tune and no TCU tune ?

[Pharp]

I see no relation with TCU or ECU tune/no tune, are you 100% sure of respecting the required conditions?

- warm engine
- steering wheel in straight position
- hold assist and eventual start&stop deactivated
- Dynamic mode
- ESC in sport mode (1 short press)

if still no launch, I would check via diagnostic tool how many launches have been done (02 trans, measuring blocks)

I agree 100%, that’s why it doesn’t make any sense to me. I’ve tried this. I’ve tried every variation. Currently I only have OBD11, I don’t have the ability to check the launch counter on that from what I’ve read.

[ZTTRS]

your going to need to know the launch count, and get a tcu to continue the fun...

[8STTRS]

So, depending on what exactly that CEL is from, it can prevent the car from entering launch control. Launch control is far more sensitive than people think it is. Get the CEL checked, do a check on VCDS and ensure you are following the proper steps once you get past those humps.

Dynamic mode
One press on traction control
Steering wheel straight
Foot to the floor on the brake
Foot to the floor on the gas
Release the brake

There are other small tricks to learn once you get up in the power range but, that's 99% it.