L99 launch, no one using comp mode?

[maxpower5]

Originally Posted by bi11ymc

The 'M' mode has a different set of parameters than the 'D' mode, if you do not touch the paddle shifters. It shifts more aggressively. Using the paddle shifters at the drag strip will probably yield slower times than just allowing 'M' (sport mode) especially the first shift in my opinion.

you are 100% correct and i have the timeslips to prove it.

Shifting to "M" is shifting into sport mode, not drive like someone else said. it definitely shifts more aggressively.

my best success with launching is; tiny burnout prior to - removes crap from the tires so you launch better, have the car in "sport" mode with TC and stabilitrack off, left foot on the brake, right on accelerator (havent really noticed any diff by reving or not - tried reving to 1000, then 2000 - both were very close times), then slam it when the light turns green.

good luck!

[acatlover13]

Originally Posted by maxpower5

you are 100% correct and i have the timeslips to prove it.

Shifting to "M" is shifting into sport mode, not drive like someone else said. it definitely shifts more aggressively.

my best success with launching is; tiny burnout prior to - removes crap from the tires so you launch better, have the car in "sport" mode with TC and stabilitrack off, left foot on the brake, right on accelerator (havent really noticed any diff by reving or not - tried reving to 1000, then 2000 - both were very close times), then slam it when the light turns green.

good luck!

This is also how I have gotten my best times. However, I DO tach up just a little (about 1000-1100) or else my car will bog right after the launch.

[acatlover13]

OK...I just went out to the car, cranked it, and pushed the T/C button twice quickly. The DIC read "Stabilitrack Competitive Mode" and the Stabilitrack symbol shows off, while the TC is NOT off. Isn't that the same as T/C on and Stabilitrak off??? Here is what the owner's manual has to say about, although I wouldn't say it clears much up (LOL):

Although I do notice that it says the system used engine and brake to control wheel spin while the Stabilitrak system uses "selective brake application." Now call me crazy....but drag racing + brakes = slower. Right????

[SGOS252382]

The owner manual has a way of just confusing everyone .lol

A good test would be to smoke the tires. If you can do a burn out (smoke the tires) while in competitive mode, you know TC is off.

Because you can't do a good burn out (smoke the tires) with the TC on.

[PnCRedJwl2SS]

Originally Posted by Ject

This appears to be true, tried it out today
Competitive Mode (2 taps) - Would hold rpm at 1,500 in D, S, M1
All other modes the car wanted to push/roll forward and or tires start to slip.

Ject,

Thanks for the confirmation...that's pretty much what I found--except that i never tried it in M1...only in D and S modes.

Much appreciated! It appears we L99 owners do have our own "undocumented" version of "launch control" while in Stabilitrak Competitive Mode.

Would love to hear other folks try this out and add additional confirmation...

[PnCRedJwl2SS]

Originally Posted by SGOS252382

I've always understood competitive mode as it turns off traction control and limits stabilitrac (leaves stabilitrac on but at a reduced rate).
So you can smoke the tires in competitive mode, but if you start to get sideways, the computer will help you out a bit.

But I don't use competitive mode so I can't say this for a fact.

Yep...this is also my understanding...it would be good to know for sure, tho...I keep hearing different things...

Thanks!

[general23cmp]

Originally Posted by PnCRedJwl2SS

Ject,

Thanks for the confirmation...that's pretty much what I found--except that i never tried it in M1...only in D and S modes.

Much appreciated! It appears we L99 owners do have our own "undocumented" version of "launch control" while in Stabilitrak Competitive Mode.

Would love to hear other folks try this out and add additional confirmation...

So, is this with the throttle to the floor like a manual does?

[PnCRedJwl2SS]

Originally Posted by acatlover13

OK...I just went out to the car, cranked it, and pushed the T/C button twice quickly. The DIC read "Stabilitrack Competitive Mode" and the Stabilitrack symbol shows off, while the TC is NOT off. Isn't that the same as T/C on and Stabilitrak off??? Here is what the owner's manual has to say about, although I wouldn't say it clears much up (LOL):

Although I do notice that it says the system used engine and brake to control wheel spin while the Stabilitrak system uses "selective brake application." Now call me crazy....but drag racing + brakes = slower. Right????

acatlover13,

Thanks to you, too, for looking into this. I also looked at the info in the manual and the part about selective application of brakes is what made me wonder if the icon that shows up in the dash when you are in Competitive Mode is not somewhat misleading. As you indicated, it makes it look like the TC is still on and the StabiliTrak is turned off--but I'm starting to believe the reverse is true.

I'm still not 100% convinced either way...

[PnCRedJwl2SS]

Originally Posted by general23cmp

So, is this with the throttle to the floor like a manual does?

Yep, a swift press of the accelerator pedal, all the way to the floor.

Anyone else with an L99 try this yet?

[GRSCAMARO]

Originally Posted by PnCRedJwl2SS

Yep, a swift press of the accelerator pedal, all the way to the floor.

Anyone else with an L99 try this yet?

OK. Yall peaked my interest again.

So if you press the bottom twice, hold the brake and swiftly press the accelerator to the floor, the engine will hold at 1500 RPM? If so, what happens when you release the brake? When does the engine rev up? Sounds like I need to find a deserted road this weekend and give it a try.

[GRSCAMARO]

Originally Posted by maxpower5

you are 100% correct and i have the timeslips to prove it.

Shifting to "M" is shifting into sport mode, not drive like someone else said. it definitely shifts more aggressively.

my best success with launching is; tiny burnout prior to - removes crap from the tires so you launch better, have the car in "sport" mode with TC and stabilitrack off, left foot on the brake, right on accelerator (havent really noticed any diff by reving or not - tried reving to 1000, then 2000 - both were very close times), then slam it when the light turns green.

good luck!

This is also how I have launched in the past. I guess I will try a few of the other methods listed here the next chance I get to go to a track. I purchased a GTech Pro SS (http://www.gtechpro.com/ss.html) to play with at the track. It will record runs and will play back a RPM curve. It will be interesting to see the different shift points with the different TS and stabilitrac modes.

[ravensjeff]

I would think someone would have to practice alot to get better times in the 1/4 mile using the tapshift buttons, but I'm sure its possible. I am a drag strip novice, but got advice from this message board on launching the 2SS Auto:

1) At the lights, put the shifter in M for sport mode.

2) Leave both TC and stabilitrak activated. TC is left on unless you need to do a burnout to heat up drag slicks for traction. You don't do a burnout with stock tires-drive around any liquid on the track to keep your tires DRY. Stabilitrak is left on AT THE DRAG STRIP because your intention is to go straight. There was a video early on of one of the first Camaro trips down the drag strip where the racer had stabilitrak off- went sideways and hit the wall. I believe the racer had stock tires on, so no need to turn off stabilitrak.

2) Mash the gas pedal all the way down when the next to last light comes on the tree- if not, you will have a slow reaction time and most likely lose!!

3) In sport mode, the car shifts at 5500 rpm. This is the part I was worried about, but dam if it didn't work exactly like that. I beat the manual 2010 2SS. Shifting a manual tranny to me is like a work of art. The good racers who can shift are special.


Competitive Mode is generally for road course racing, I believe (And excellent drag strip racers with alot of horsepower). Your intention is NOT TO GO STRAIGHT, therefore you don't want stabilitrak slowing you down when going fast around corners.

Sport Mode is not to be used to drive around town. I somewhat foundt this out while driving home from the drag strip in Sport Mode and the transmision seemed to be "Racing". Thought I damaged the tranny [NOT!!].

[SoTHavok]

from reading this post let me guess this straight,

1) a good padde shifter can beat the computer in M mode
Question: what if you have a tune? is the computer better?
2) Competitive Mode is good for a track with turns and such
3) Both T/C and stabilitrak off is good for taking off straight and fast, dragstrip
4) T/C off is best for doing a burnout?

[OBSSEST]

This thread needs a bump. The "undocumented" L99 LAUNCH CONTROL mode mentioned is very interesting. Why would that be left ouf of the owner's manual? I'm going to give mine a try in a few hours and see how it works.

Has anyone tried this L99 LAUNCH CONTROL at the drag strip?