To see what your converter will flash, don't push the rpm's until the car is trying to move. Stall at a lower rpm then when you leave see what the rpm's FLASH to. If you are footbraking to the point that the car is trying to push past the brakes then you are allready on the converter therefore it can not flash. Try starting out about 2000 or so and then leave and see what rpm you come up to. I hope I explained that good enough.