over the past couple of months i've had a problem with my rpms dropping below 500 when i start the car and when i rev the car. but as soon as it drops below 500 the car sometimes stalls and other times it feels like its about to stall but then it jumps up to about 800. does anybody else have this problem, maybe it has something to do with my frankencar intake? the dealer hooked it up to their computer and nothing irregular showed up. they said they could reprogram my computer and bump up the idle about 200, but they didn't know if that would help. whats the deal?!?!