How do so many people get away with running offroad X (or H) pipes in emission controlled states? It seems like 95% of people have offroad pipes. Is it something that is very noticeable (sound-wise) that a cop could tell its offroad, or is it more of just a difference in tone? And is there any hp differences from restrictions, even with high flow cats? I want to get longtubes, but that means I also have to get a short x pipe but catted x pipes are so much more expensive than offroad ones. What do you guys suggest?