I am having a problem with my cobra stalling, it only seems to stall once when I bring it to a complete stop.... after it stalls that one time it seems to run fine for the rest of the trip. The weird thing is that is does not stall everytime that I drive it either. Within the past month I have installed kooks long tubes, 2.76 pulley and idlers, and had the car custom tuned . If I remember correctly the car stalled before the mods. Just in case it matters it is an '04 with approx. 3,000 miles. What may be causing this problem?