Kelly did you have them clear the code ? Kia's like to throw codes. I don't have my code book handy, others here might have one in front of them, don't remember what p0107 is for, how long ago was the air filter changed ? if the fld. still full when it's cold and you remove the cap? and if the fld in the res. tank still at the full mark on the side ?

John

2001 5sp. K&N stock filter 215/70/15
If your check engine light is on at least you know the light still works