I really don't know why it's so dammn loud. I am scared to go past 4k rpm cut it gets really loud.. when it idles it sounds nice and rumbly and deep but when it opens up forget about it. I am scared I will get pulled over or I am afraid to floor my car cuz of how loud it is and cops! It's a VIBRANT exhaust... anyone hear of this company? It's a great exhaust 3: stainless steel power is amazing.. it came with a silencer but it's sounds like crap with it on.. anyone have this problem??