I just installed my 2Bros Black Aluminum this morning. It's loud. I'm gonna mod the stock tip using an old chopper trick before I spring the bucks for the P1X tip. I'll post up my results.the website says it comes with a P-Tip (sound suppression). Did you get to choose which one (the P1 -3/4 db, or the P1X - -7/8 db)?
At cruising load, it's not bad, but this is a 250 and most of the time your on the gas somewhat. The more load, the louder it is.