ill post a pic of the engine bay up after i get my procivic decal (even though it has nothing to do with it), been real lazy lately. umm as far as performance wise, i dont really understand what some people are complaining about. in terms of the lower range i feel it is at least the same (if not better) then stock. in the mid to higher range, i feel like its quicker, more responsive, and better. of course this could all be my imagination, im not an expert nor do i claim to be, just someone whos driven an '05 rsx type s (my baby samantha =*[) for 2.5 years, and my '12 SI (my new baby RUBY) for about a month! aesthetics wise, it looks nice in the engine bay, i got the wrinkle red so it stands out a bit even though it is a bit tucked in, and it sounds pretty beast, way better than stock (again this is my opinion). and economy wise (so far) i am getting more MPG. before hand, i was in the 24-24.5 mpg mark, and stuck there indefinitely, theres a lot of city driving and traffic here so. afterwards, its still in the process of balancing out, its around 26 right now. it dipped down to 25.6 cause of all the traffic, but it soared back up to 26.5.
again, most of this is based solely on my opinion and feel for my car, so if you get it and decide you dont like it, dont blame me. otherwise, i hope u make a decision that you will be happy with. I am happy with mine.