Wrong! Adding holes to the muffler releases back pressure. This can be good or bad depending on the intake and carb setting. Adding an aftermarket muffler is worse then drilling holes in the baffle. Also the muffler exit hole is still the same diameter so there is no change in pressure.
Visit Korider.com and go to the 250 forum and do a search. I posted pics many years ago.
pumbaatim 10 months ago
where did you do the holes ? any pictures?
alexlycaon 10 months ago
wher abt did u drill the hole?is anywhere inside the muffler?
MrManokz19 2 years ago
Wrong! Adding holes to the muffler releases back pressure. This can be good or bad depending on the intake and carb setting. Adding an aftermarket muffler is worse then drilling holes in the baffle. Also the muffler exit hole is still the same diameter so there is no change in pressure.
pumbaatim 3 years ago 2
so how would i make my exhaust loud with out loosing power or causing damage to the bike ?
DB4Daimless 2 years ago
u dont ever wanna mess with a muffler cus it might cause back pressure on the engine which isnt good
FatDM 3 years ago
you always want abit of back pressure! know ur stuff
Peterrabbit10 2 years ago