Well i finally got my 3 inch midpipe installed on to my greddy exhaust the sound is sorta loud but to me it is nt all that bad for as performance i cant tell any different far as the low end its seems like i have more but maybe it just me.

 

Expected, as there is no resonator anymore. essentially before you had 2 resonators (the cat acting as one) & a separate resonator to break up the noise, and now you have none.