I have the 4 inchers on with a de-cat-ed stock header and sometimes it's too loud. I really notice it on long rides.
I have this exact set up and it's great overall, especially local and half day trips. On the 9-hour one-way rides to Daytona you start to ask yourself WHY didn't I throw the OEM slip on's back on. Even with ear plugs, they drone on and on. I suppose any loud setup would do the same.
Sent from my iPhone using Tapatalk