Cattman SS Y-pipe Owners:

What have you guys done to reduce the buzzing/vibrational noise from the pipe at/around 5500+ rpm

 

for you,try wrapping your pipe with Thermal header Wrap.It should make it about 20-50% quiter.Just make sure you do it good the firs time otherwise like on my car the wrap slowly will unravel it's self and I have to do again and again.