issue & rasp after ART pipes

mwhit02

So first thing I noticed after install was the hollow metallic sound when stepping on the gas full throttle. I just assume this is normal when switching out from a cat.

the second thing is that there is clearly an audible hiss sound when letting of the gas. I thought I had read in other threads there was no rasp/hiss with these pipes...if I would have known there was I wouold have just saved the money and bought straight test pipes.

Third is that when I stomp on it in first, there is something making a noise from underneath the car. I did not cut the bolt on the driver side per instructions, so I will assume it is that hitting on the top of the test pipe.