So this morning I started my car and noticed it was hesitating bad. Well luckily it was just a bad spark plug however in searching I heard that this filter could be the cause of my car hesitating and why my engine was misfiring. When I went to go clean the filter IT WASN'T THERE!!!!!! who knows how long its been missing but ive had the car for a little over 30k miles. Is there any serious threat to my engine? One of the guys at the local meets works at lexus and he scooped one up for me and ill get it tonight. Im just wondering what kind of damage has been done to my engine without this thing in there for who knows how long.