Just FYI the hood liner is a heat/fire blanket. I'm not sure if it actually works or not, but I do know for a fact that it is also a sound deadener. I took mine off and damn my car sounds mean. While on the subject, I have people convinced my car is S/C'd because i added a conical filter to the end of that bendy black tube, sounds cool as hell, but people are so dumb sometimes! Think I might put my liner back in now, good work!