I sprayed today!!!!!!! Man was it tight!!!! I only used it in 2nd and 3rd. and man can i feel it. I have no window switch so i dont want to use it in first yet till i get one. And you can hear it to ssssssssssssshhhhhhhhhhhhhhhhhhhhhhh. man it was incredible.!!!!!!!!!!!!!!!!!!!!!!! im so proud of my car lol