recently bought a bosch hbl5450UC, the inside glass was smudged at the factory. K&N took apart the door, cleaned the glass, but could not assemble the door back to factory tolerances - it was out of square and did not shut completely on one side, he left before I could inspect the work completely. I had them come back out to fix/adjust the door, but was still not like it was from the factory. He said it is the best I can do. Now I am getting an E124 error code which is the door close sensor. I will not use K&N again.
Pros: On time
Cons: no qualified
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