Me and my friend just put it on about an hour ago. Took a little under an hour for us to install and DAAAAMN it sounds nice. I was going to get a blow off valve after this but my suggestion to anyone who wants a blow off valve and CAI is don't waste your time. It sounds just like one when you shift and let off the gas. You get the same nice swoosh and it sounds even louder than my friend's blow off valve. Plus everyone says they're no good for 1.8's anyway...but thanks to all who helped me once again.