There is a rev limiter that cuts fuel when the car is in nuetral above a certain rpm. This is done to prevent the torque converter from excessive static pressure that can result when revving the car high with no load.

Don't rev it hard in nuetral. Neither the engine nor the transmission appreciate it.

__________________
Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record