I love the sound of the maggies and the stock H-pipe, I have the hiflow catted X but I prefer the sound of the stock H. I was just wondering if it is the higher flow that changes the sound or if it is the X design. I am cosidering modifying my catted X pipe into an H-pipe. But before I do I was wodering if anyone has a hiflow catted H connected to their maggie cat back, or if anyone knows if the sound would be like the stock H-pipe sound.