I like my flows, just too quiet with the stock H. But then again, almost ANY catback will be quiet with the stock H (to me anyway), unless I get something like SLP, but I dont really like the tone. I absolutely love the sound of a GT with cams, LT's, and offroad H and flows, so while they are a tad too quiet now, I'm gonna keep em. Just wish I could get the damn tips to line up right.