Since new my CX7 has had black sooty exhaust pipe tips inside. The dealer said this is due to it running rich which is normal. Proabably part of the reason a CX7 doesn't get that great of gas mileage. So I ask all of you-Could the recall be addressing this? Is that sooty exhaust what's violating California Clean Air law and requiring the recall? Once the recall is done, will I see less sooty exhaust tips and maybe better gas mileage?