So about a week ago i bought the rv6 v3 jpipe and of course my exhuast had a little rasp around the 3-3500 rpm range. I know that rv6 sells the magnaflow resonator to help with this issue but my question is what other parts or resonators can i use to fix the rasp. The muffler shop guy suggested putting a glassback in place of a resonator becuase they dont carry any, would this help and would it change the exhaust tone? becuase my current set up is perfect for me, and my internet searches have provided little help as to different resonator brands. Im sure there is a good bit of people that have had exhaust rasp issues what did yall do to fix it?