I think all these Khyber, Efi Cultus and Carby Cultus share same front and middle mufflers. Only The end muffler in Khyber is different.
I once talked to a silencer guy about it and he gave idea of getting a straight pipe in place of front (first) muffler and noise will go away.. But i didn't knew any pro's and con's of doing that so i kept it stock.
@Hassan1991 Bhai what are your thoughts?
If we remove the front (first) muffler in Cultus and get a straight pipe in place of that while keeping other two mufflers what would be advantages and disadvantages of doing that.....