Bisson or Slimline in Sig Extra 300XS?
You dont say what engine size you are talking about but I have a slimline on my OS 160 and like it very much. RPM came up over 450 rpm from stock muffler. I have had a slimline on a 91fx for quite some time with no problems. No experience with bisson. When I bought my slimline prices were just the opposite. bisson was about 20 dollars cheaper