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  1. Exhaust Tech
    Hey there! Back with another question. The shop says I should replace the center pipe/resonator, so Im looking around for an x pipe to replace it with and some new mufflers. I keep seeing everyone else giving different sizes for the diameter. Is it 2.5 or 2.25?
  2. Exhaust Tech
    Hi everyone. Has anyone actually done this without replacing the whole stock cat back system? I am having one heck of a time getting anyone in the Detroit area to remove the pup cats and mid muffler and replace with an X-pipe on our GXP. I simply want a little more exhaust note from this...
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