You guys are gonna hate this question, but I told him I would ask. My friend has an 03 400ex and he is wanting to put the LOUDEST full system exhaust that he can on it. He likes the way the HMF slip on sounds on my rubicon but he is wanting something louder for his bike. He would really appreciate the help even though you all hate these loud exhaust questions. Please pick the exhaust brand on my poll and tell me which system to get.