Launch Control Programme - FYI

[doodlebug]

^ this.

Time to move on from this one. It's a dead duck.

[harrier]

Another useful contribution from doodlebug!

I understand what you are saying Eddie555, but no I don't have to lean on the brake to "launch". Perhaps the "launch" is a VIRTUAL launch in effect, but the same system operates in the RS7, does it not, and as with the RS6, produces remarkably consistent launch times (0-60 /100 feet) in individual cars. The car's computer controls so much, is it the case that it is not controlling this? Isn't that what a PROGRAMME is? In addition, I do believe that Audi tried the DSG gearbox in the RS6, but it couldn't take the forces so they kept with the R-tronic. Was trying to cope with "dumping" the clutch part of the problem? I was advised at the dealership not to launch too often as they had had an owner with an RS6 mapped to 750BHP who had managed to shear the car's prop shaft bolts when 'launching".

I don't profess to have the definitive answer on this, I am just asking. It was another member (? RS6 owner) who came up with the 200 launch limit.

Seeing as doodlebug likes his ducks; what's sauce for the goose is sauce for the gander! If it walks like a duck and quacks like a duck is it or is it not a duck? Questions for you - do car's with your genuine launch control launch quite as quickly as the RS6 and is it possible for the RS6 to launch any quicker than with the prep. described?

Useful contributions appreciated.

[Eddie555]

I give up. I can't explain to you any other way apart from
"The RS6 DOES NOT HAVE LAUNCH!!!"

Have a good day.

[doodlebug]

R-tronic? What are you on about man. That's different again, was only fitted to 1st gen R8, pre S-tronic and is a manual box with an actuator on the clutch.

I'm with Eddie, you fill your launch control boots.

[Leo-RS]

I think both of you are correct in a way to be fair.

The S-Tronic gearboxes do have a launch control feature, the exact same way Porsche do with their PDK. You can sit there with your foot flat to the floor with standard horsepower or double/treble the horsepower and the transmission will behave itself, it will not want to move forward until you release that brake pedal. The ECU uses the cars inbuilt traction control systems to control the launch (Unless you turn ESP fully off, but even then there is still some control) - Certain launch control programs will change the base map, Nissan GTR launch control for example which limits 1st gear boost) but I am not 100% sure if this is the case with the S-Tronic transmissions or not.

Tiptronic boxes, use exactly the same method but the difference is, the transmission is loaded up against the brakes. The cars nose will rise and it WILL want to move forward. The only thing stopping it from doing so with standard horsepower is brake pressure. When you tune the car, brake pedal pressure is not enough, the car will move forward 99% of the time, it's a bitc* to hold and then launch. The ECU will still use the cars inbuilt traction control systems to try to control the launch. - I wouldn't have thought this 'launch' feature would change the base map.

Both use the same methods to activate and both result in the same clean getaway with a perfect launch every time but the S-Tronic launch is the proper Launch control system whereas the Tiptronic is an improvised make do 'system'

There are no launch control limits, this initially come from an Audi of America document a few years back where they enabled this feature on certain cars across the pond. It was never used in the European market or any other market as far as I'm aware and no European tuners ever found evidence of counters or restrictions to stop the boxes from using the launch feature. I myself clocked up a lot more than 200 launches on my TTRS S-Tronic back in 2011/12 so it definitely did not apply here. There is nothing in the documentation either warning you that this is a restricted feature either.

If someone was to ask me if the C7 RS6 has launch control or not, I would have to say No, but it has an improvised way of launching the car effectively.

[harrier]

Yes, R ironic was a mistake, thank you doodlebug. I was searching for the right term for the C7's automatic gearbox and have spent too much time trying to get a friend's R8 on song.

[harrier]

THANK YOU Leo, that was what I wanted to know - splitting hairs in effect. There is no Launch Control button, but that hardly matters.

Thanks again.

[Ian_C]

Well said. All it does is load up the torque converter. I've experience a 'launch' in a C7 RS6 using the opening posters process, and if Im honest I was a little underwhelmed, for a car that has such brutal in gear acceleration with over 500 lb ft, the car could launch so much harder if Audi let it!

[IanH755]

Technically you can change a Torque Converters "stall" speed to one with a higher RPM but thats a physical change (engine/gearbox out etc) and, while the C5 has shops in the US that make these, I've not seen anywhere that does higher stall speed C6/C7 TC's yet.

From my previous AWD/4WD drag experience the revs would have to be up at 5k+ for a proper drag launch and I doubt Audi would be happy with that!

[kmpowell]

[kmpowell]

[kmpowell]

[MikeFish]

Just to note that some RS cars do have a launch counter as Sam found on the RS4. I've looked on the RS3 (which has proper launch control) and my RS6 and couldn't find a counter on either.
But if Audi don't tell us that there is a limit then I can't see how they can argue a claim against a car that has a high launch count.

[feeltheburn]

Just to note that some RS cars do have a launch counter as Sam found on the RS4. I've looked on the RS3 (which has proper launch control) and my RS6 and couldn't find a counter on either.
But if Audi don't tell us that there is a limit then I can't see how they can argue a claim against a car that has a high launch count.

That is why I qualified my statement about a 200 limit with "apparently". Given there is no actual launch program ( I hope there is agreement about that now) then how would a counter be legitimately triggered...unless of course there is actually a launch program after all!

[Eddie555]

Mike they don't have to be RS cars to have a proper launch program. They just have to be "S-tronic". The Mrs A3 tdi is and has it.