My tuner told me this as well that the reason the car will stall is because it has a AFM system, he said it I want to do it properly I need to delete that system, he said I can try it though to see how it goes. My BOV recirculates btw (can hear flutter sometimes though), how do s15's and stuff not stall and they also have the AFM system? I was considering blocking it off for ovbious reasons but was hesistant because of the above.