Does anyone have a flowmaster muffler? Do they make em to fit our cars or would I have to "customize it?" What are your opinions? Also, while I'm around the subjuct of exhaust, what if I replaced my cat with a straight pipe I made? Please someone give me a legit estimate on their thoughts of HP and ft/lb increases on this, keeping in mind the idea that I have no S/c nor any exhaust mods. No improved ecu either. I'm almost bone stock sigh sigh sigh...

 

This is illegal. It is bad for the environment. Please don't do it.