I need do this pretty soon, I have an FMF Shorty Silencer and planned on buying performance packing from FMF. Any thoughts on this or packing from other brands. I have also heard of guys using R13 or R19 house insulation instead of the designed packing. :coocoo: :clue:
A lot of people use home insulation including myself. If you think it should be more dense then use more. It works perfectly and it's just about free. Also try fiberglass pipe insulation, heard from a good source that it works as well.