hello guys, i have 04 x stock muffler. when car sits idle air come out unevenly from muffler left one has more air than right one, actually i couldnt feel anything from rigjht one, is there any problem with it? also left one showing more wear and tear than right one. also when car sits idle, muffler showing like sneezy sort of sound when i rev it on neutral. any problem? thanks guys!

 

I believe that is normal. There is a pressure activated valve in the stock muffler to open up the other exit as needed. Next time the car is in for service, have them take a look for leaks, but very unlikely on a car that new.