I would like to share my own stalling experience.
I have a r32 gtst auto (full 3inch system is the only mod), my car use to stall when coming to a stop, going around corners, and at times when cruising at around 3 grand bunny hop. Occasionally it would cut out even when i wasn't coming to a stop.
The solution to my problem was really quite simple. Clean the airflow meter.
So i took off the airflow meter and gave the sensor a good clean with electrical contact cleaner (available at Tandy dick smith etc). Now, no more stalling issues.