Ok I just had to mention this. I've had my car since sometime in February, and I started modding it right off the bat, so it's had a non-stock exhaust most of that time too. I've had lots of stares and longing looks, but I've never had a random person actually stop and comment on my car before.
When I pulled into my garage just now, on day 2 with the FI exhaust, a neighbor was out walking his dog close by, and actually walked over to my garage just to tell me that my car sounds so great