Talk to Ludedude about getting a new pipe and silencer. You can choose from PowerPros Rev or Torque pipe. I would suggest getting your pipe with the long silencer. I have the short one and it's LOUD! My friend, Odykid, has the long silencer and it's still LOUD, but the ladies seem to like the longer silencer..... :shock:
Seriously, though, before you start tinkering with welding and experimenting with what might end up being the wrong silencer, go with the mainstream solution and get yourself a PowerPros.
Best of luck with your new Pilot!