forgot to answer your first question. when your cats are clogged you will loose power especially top end power.
With my experience lately with going completely catless i noticed my car is almost the same on the lower end, but got way more jam to it in higher speeds and in the upper RPM band.
95 SE MTX
DH UIM, 65mm TB, SC CAI, Quaife, Centerforce, Fidanza, UR Pulley, F/R Strut Braces, Cross Drilled Rotors, S.S. Brake Hoses, 18" Enkei RS5, SVT Engine Mounts+Inserts, MSDS & y-pipe, Trubendz resonated exhaust & MagnaFlow cat
| 
