Just replace the rear muffler with a straight flow unit.....the problem is it sound quite nice and bassy when at idle to mid rev range.....but once the engine run to high rev range the engine sound more loud then the exhaust sound....does removing the centre bullet can help this,what about the performance?

fyi,the ride is a Kenari with 1.8 inch piping,cylinder centre bullet and straight through rear muffler with a L9 Turbo engine coupled with a TD04 turbine ~

Thanks for any info ~ =)