Just got my SpinTech mufflers installed, and WOW!! I thought it would sound better, but I never thought it would improve the sound this much... :grin: :grin: It growls like you wouldn't believe, and they were right, they don't drone at all. In fact, they sound about the same as stock at highway speeds, maybe a slight amount louder, but not much. This sound is really impressive considering that I still have the stock h-pipe with 4 cats on it. I was going to put on an x-pipe, but now I think I will leave it alone, I don't want to mess with the sound again... :smile: