Tuning A6 Launch Control

[camaro1]

a6 has no launch control,, all you are feeling is the trans stall torque managment, the ecm is just shutting the throttle off to keep the tcm happy with whatever numbers you set in the stall torque mgt table,,, this table needs to be modified along with others when you add a stall converter otherwise even with a 3000+ rpm converter the ecm will keep the throttle only open enough to keep the rpm at these values.

[Supercharged SS]

Originally Posted by Duke

Try again, this time push the accelarator pedal to the floor in one quick stroke.

I will when I have the car in an open area. Mashing the gas is a bad idea with 660 rwhp and 25 degrees outside. But I will try it if I take the car out tomorrow. My interest has been peaked. If I do try I'll post it either way.

[Duke]

Maybe launch control is misleading, ok, stall torque management. Hey, then it can be adjusted, in HP tuners anyway.

[camaro1]

it is only torque mgt it can be set up higher but your stall converter determines your stall speed, it is just a safety measure in the ecm/tcm for the stock converter torque mgt,, it isnt launch control

[Duke]

Originally Posted by Supercharged SS

I'm curious if you can crank it up to the desired stall speed like you mentioned (2-3k). You should let us know after you adjust it.

I would think that a car like yours could really benefit as far as launch consistency if this can be done. Very impressive machine you have there.

I have to talk to the tuner that will mod my car. He uses EFI live.

[Supercharged SS]

Originally Posted by Duke

I would think that a car like yours could really benefit as far as launch consistency if this can be done. Very impressive machine you have there.

I have to talk to the tuner that will mod my car. He uses EFI live.

I can have my car leave 10 times and the 60' will fluctuate no more than .2 in either direction. I.E., last March, it did 6 1.60 60's in a row. Thats consistent enough for me. All those tables do is confuse me. I have no idea what adjust that would do. That's why I take it to a professional. All I was certain of was that there is no "launch control",( where the car would hold a certain rpm) on the A6.

[Duke]

Originally Posted by camaro1

it is only torque mgt it can be set up higher but your stall converter determines your stall speed, it is just a safety measure in the ecm/tcm for the stock converter torque mgt,, it isnt launch control

That's the way I am leaning, that it is limited by the converter, but it still acts like launch control.

When I do it, I'm at the line with brake on, engine at 1300 rpm and the throttle on the floor. Then all I have to do is dump the brake.

[Supercharged SS]

Originally Posted by Duke

That's the way I am leaning, that it is limited by the converter, but it still acts like launch control.

When I do it, I'm at the line with brake on, engine at 1300 rpm and the throttle on the floor. Then all I have to do is dump the brake.

All you are doing is foot brake stalling your car to 1300 rpm's. If you car made more power you wouldn't be able to hold it to the floor. I'm suprised you can right now. With the stock stall my car, with the front tires locked, would push itself down the track at 1400 rpm's. It would leave black marks from the fronts. Without a trans brake that is all the A6 guys can do to leave the line. Unless you wack if off idle.

[Duke]

Believe me it works.

[jimmyj333]

Originally Posted by Duke

Believe me it works.

yes it does work!! Holds at 1300 with no push.

Almost feels like pulling timing or shutting down fuel.

I am interested in knowing if this can be tuned for higher launches also.

[Entaille]

curious if that is beneficial towards your 60' or not? what kind of times are you putting down using the stall at 1300rpm?

[LS7 427]

I gotta run with Supercharged SS on this. Anything over 1400 RPM and I'm leaving front wheel marks down the track.

I've never tried the other method, might give it a go during a test and tune night in the spring.

[ArkySS]

If you tap the TC button twice it goes to comp mode which is not launch control in the traditional sense. It dumbs down the stabilitrak and traction control. The M6 has a true launch control in that it will hold the revs at a certain point. The A6 will NOT hold revs for you at that limit. The TC will hold the revs below a certain limit (thus the need for a higher stall converter). If you hold down the TC button for 10 seconds or so it will turn stabilitrak and traction control off completely as I understand it. So to say the A6 has launch control in the true sense is false. Now lets argue about torque management on or off LOL!

[xx_ED_xx]

all the torque management should be is allowing WOT, so pretty much it controls the throttle blades hence the reason I am not a drive by wire kind of person.