I have a 94 XR600 with a Supertrapp "racing" exhaust. I used to ride all the time in the California desert like Mohave and Barstow areas. I have never even seen a ranger. I haven't been riding for at least a few years now. One of my friends got a bike so I am getting back into it and I started reading on the internet and I am seeing all this stuff about noise regulations being enforced. Like I said when I used to go I don't think I ever saw a ranger once. Are they really cracking down on this stuff now? I think my friend might want to go to some other places besides out in the middle of the desert. I am almost positive that my exhaust is not under 101 db (i think that is my limit.) What is a good exaust for my bike that will pass the sound standards? After a little shopping I saw the FMF Q series and a Pro Circuit Type 496. I didn't really feel like spending about $300 right off the bat to get back into riding though.