Update
I think my problem differs a bit, when it starts to run rough it doesn't matter if it's at high or low rpms. After 2 more bouts I took it to another dealership and they recommended changing the mass air flow sensor, cleaning the throttle valve, and a new air filter (apparently mine was pinched in the housing causing unregulated air to get into the engine). Haven't made any decisions yet, total cost is around $1200. Does this seem right to everyone else? I'm going to change the air filter this weekend and see if it helps...
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