Just installed a Jardine on my 09XB12Ss a week ago. Evere since I have had it on I can hear more engine noise than before with the stock pipe. Is this normal considering the different tones of the 2 exhausts. I seem to remember a similar ocurance when I installed a super trapp on my old KLR650 a few years ago. Nothing else has been done to the bike other that it just came back from service 2 days before I installed the pipe.