[clg82]

Ok everyone have kind of a weird question. About a month ago i tried launch control. It was different…..and as you all may know that setting is only available in “track” mode. But tonight, I tried to launch the car without launch control and just try and “modulate” the RPMs with my foot, but i noticed if i hold the break and hold the gas to the floor the RPMs will hold at 2500 no problem almost like it has a “torque converter”. Is this normal? Because it seemed to launch better without hesitation NOT using launch control but using the other method. Just a side note my LS1 trans am I can modulate the RPMs with brake and gas pedal, even causing the tires to break traction or spin the tires, but it’s a different effect I get out of the two. If that makes sense. Am I noticing that this is a different “correct method” to launch the car? And how is the car determining to hold at 2500 without using launch control? Hope I don’t sound like I’m rambling….

[Spaceme1117]

Your car has an automatic trans so it does indeed have a torque convertor.

[joekd]

If you are in stabilitrak competition mode (2 presses on trac control button) and are in sport or track mode launch mode is still active without any additional indicator it's on

[radz28]

There's a section in the Owner's Manual that details this information.

I've attached my "cheat sheet" with some information I've collected and found to be helpful for myself. If you scroll to about page 7 of my attachment, you'll find where it details the modes and as you continue, you'll find detail about Launch Control. I apologize about the orientation of the pages, as they're set-up to print easier in Adobe.

Hopefully it's a little helpful.

[clg82]

Originally Posted by Spaceme1117

Your car has an automatic trans so it does indeed have a torque convertor.

Yep I get that part. My trans am was also an automatic, but I could "modulate" or brake torque the transmission to go past 2500 RPMs, on the ZL1 it just stays at those RPMs not breaking the tires loose at all.

[Vigilante375]

Launch control in the ZL1 is crap compared to other vehicles.

It's been proven that the old school method of brake torque is more efficient.

[clg82]

Originally Posted by Vigilante375

Launch control in the ZL1 is crap compared to other vehicles.

It's been proven that the old school method of brake torque is more efficient.

I understand that, which doesn't answer my question. When I did launch control it was in fact.....crap.....but simply holding the brake and the gas all the way to the floor without being in "launch control" mode is much more efficient....just confused as to why it doesn't break the tires loose since the gas is to the floor like my older LS1 does....

[Vigilante375]

Originally Posted by clg82

I understand that, which doesn't answer my question. When I did launch control it was in fact.....crap.....but simply holding the brake and the gas all the way to the floor without being in "launch control" mode is much more efficient....just confused as to why it doesn't break the tires loose since the gas is to the floor like my older LS1 does....

Well your "older" Trans AM had an "older" rear end with "older" traction control.

The ZL1 has better traction control and also an eLSD. Good tires also play a role too.

Basically, you are driving a car that is, depending on what year model your T/A was, 20 years newer and has 20 years newer components and software.

[clg82]

Originally Posted by Vigilante375

Well your "older" Trans AM had an "older" rear end with "older" traction control.

The ZL1 has better traction control and also an eLSD. Good tires also play a role too.

Basically, you are driving a car that is, depending on what year model your T/A was, 20 years newer and has 20 years newer components and software.

I understand that I’m simply asking why it will hold at 2500 RPMs without launch control, is it a setting? Why even have launch control if holding the brake and gas to the floor will hold it at 2500 and works better?

[gtfoxy]

Originally Posted by clg82

I understand that I’m simply asking why it will hold at 2500 RPMs without launch control, is it a setting? Why even have launch control if holding the brake and gas to the floor will hold it at 2500 and works better?

Are you trying to launch or do a burn out?


If launch control is active it won’t let you exceed the RPM it’s set to, it’s like a two step that way.

If you’re trying to do a burnout you use the line lock feature. That will lock the front brakes for 15 seconds & let you do your burnout.

But yeah, I think it won’t let you exceed 2500rpm without launch control on or line lock active. Haven’t tried though.

[joekd]

If you are giving it gas and it isn't trying to spin the rear tires then you are in launch control mode, try holding the brake pedal with less pressure

[clg82]

Originally Posted by joekd

If you are giving it gas and it isn't trying to spin the rear tires then you are in launch control mode, try holding the brake pedal with less pressure

But I’m not in track mode…