Whats up everybody. I have a quck question. I have a 1999 Grand Prix gt with a custom cold air box setup. So here's my question. When you turn your car off, does your intake make a final "sucking noise" just after your engine has been turned off? The second i turn the car off, the intake takes a final "breath" and then goes silent. I figure it is because the engine is still turning over a little bit, but im wondering if anyone else has encountered this or if it is not normal. Let me know, thanks. peace.