I don't know much about exhaust, but I thought I heard somewhere that x pipes or something like that was illegal in some states. I just want to make sure that I'm not putting anything illegal on my car.
Beth
If you want to stay legal, you don't want an O/R x pipe or O/R h pipe. O/R means off road, which means that they have no catalytic converters. To stay completely in the letter of the law, stay away from even the catted x or h pipes. You are not supposed to move or change the cats at all. Chances of anything happening are slim to none, but technically, if you want to stay legal, leave your stock cats where they are.
The best thing if you want a better sound is to find a car that has the system you are wondering about, and hear it in person. Find a Mustang club, and go to one of their events. Or find out where people cruise or hang out. If you hear a car you like, ask the owner what they have. Go to a car show, and ask the '05-'07 'stang owners what they're running, and ask to hear the car run.
It's all a matter of personal taste. I have SLP Loud Mouths, with stock exhaust otherwise. I could tell you that they sound the best, (true, in my opinion), and that I get people coming up to me and asking about my car just because I idled through a parking lot (also true). But if you got them, you may absolutely hate them. Some people think they are outrageously loud, and to them, maybe they are. I do take it easy when I'm leaving the house at 6:30 AM, or coming home at 2:00 AM, but I did that with the stock mufflers too.
I have read here, and on many other forums, of countless people who tried 4, 5, or 6 different systems before they found the one they liked. That's a lot of money to burn through, when you could invest a little time into some research instead.
