i have a 99 stick and when im rolling down a hill i like to put it in neutral. when i reach speeds of like 35-40mph my car stalls. but once i get to the bottom of the hill it kicks over with no problem. the car doesnt stall at any other time and this just started happening. i dunno if the K&N cold air intake i just installed has anything to do with this problem. if anyone has any suggestions please help me! thanks