Ok here's the deal. I have a 2007 wr 450 with an FMF Titaniam slip on, and my buddy has a KTM 450 with a stock exaust. My bike sounds like a friggin TTR compaired to his bike !!!! what the heck. Why doesnt my bike have that deep sound like his? Do I need to buy a powerbomb header or something? Does the bike sound different after I do the AIS mod and the Airbox mod????