SLP Loud Mouth vs Flow Master American Thunder

I put a set of flow masters on my 2006 GT and what a disapointment, not much difference n the sound. I wonder if straight pipes would be louder and sound better...anyone ever run straight pipes. I live in Texas and need exhaust to pass inspection. I drove it home and no one noticed the dif between the stock and flows............) :

I wanted a louder deeper sound.

What would straight pipes sound like? Loudmouths 2 or louder, better, worse....someone please give me an answer



you need an o/r pipe for flowmaster.. otherwise there quiet as hell. Even with a 2 hi flow catted h there ****ty in my book.