I'm not defending anyone but... I made an intake for my car and there is no way it is making 15 hp. It does have better throttle response over 2,500 rpm. I am going to try to take it to the track and run it with the stock one and the one I made to see if there is any real improvement.
It definitely feels faster but it may be wishful thinking.
I'll know for sure when i get some 1/4 numbers.