Yeah I got it today and put it in and I wasnt real keen on the way it went in did you guys experience the same thing I didnt drill the hole in the firewall does that make it fit better, what did you guys use to drill the 4 and a half inch hole and one more I took my k&n out is it okay to use the cleaner and the oil do you think its the same I just hate to see it go to waste thanks alot for the input!!!!!!!