I have an 02 Maxima and I am wondering if anybody has gutted the y-pipe of the precats. I used to own a cougar and this was a very popular mod. IF you have done this please try to answer my 3 questions as clearly as possible so I can decide whether this is worth it?

1) Any increase in sound in the cabin?
2) Any noticable power increase? Dynos?
3) Any other advantages\disadvantages?

Thank you very much

MArk Lupiani