ummmm OK if you think so.... guess Hoalts duratec puts down enough power cause he broke baffles in 40 series flowmasters. so your saying they "ALL" have the same size and model muffler? or are you trying to say all flowmasters are the same? how about on sunday we goto exaust works by my house and we will ask them what the sound is coming from your muffler.

2003 Subaru WRX some mods Even if you don't have the answer, you certainly have to admire the problem. aka ZetecRacing