I had a great time installing mine. I had to take it over to a friend's house as I don't own any automotive tools, myself. If I start getting more into modding, I most certainly will. Like other people, it took us about 90 minutes to install and we definitely took off the front driver-side wheel just for ease of movement. Ditto on the bolts, though. They're definitely 13mm and not 10 for the stock washer bottle.
I love this intake, so far. It gives me a nice, throaty growl when I floor it and the first time I've gone sideways around a corner (intentionally or unintentionally) was after installing the Injen. It definitely feels spicier throughout the power-band above 2K RPM. I decided to buy after seeing all of the research done by Scrming, and the recent Jannetty Racing CAI shootout really made me feel good about the purchase after the fact.
Uhh, but....does anyone else's horn sound funny after installing it? Did I forget to hook something back up?