The auto kind of has it...
If you're not tuned... (it appears some tuners remove this)
if you put it into competitive mode...
if you apply the brake...
if you quickly push the accelerator to the floor...
it will hold the RPMs at 1400.
Then you can just lift off the gas and go.
Source:
http://www.camaro5.com/forums/showthread.php?t=120293
It works on mine, but it does seem to occasionally hit the rev limiter just before it shifts into 2nd, which I find odd.