I already have a staight pipe in there = too much rasp drone. My concern was with the turbulance and/or pipe differences i.e. going from 2.25 to 2.5 then back down to 2.25. Reason: some people when they gut the main cat lose power(that open chamber being the problem) I'm worried that the same thing will happen here. Eneyone care to calm my fears?(or prove them right?)
