Well, I'm FINALLY freeflow. I have a straight pipe with a 4 inch twister into 3.5 inch echo tips...it sounds AWESOME! (a twister is a pipe with a big hole straight through surrounded by twisted metal that just "rifles" the exhaust around the big hole in the middle). I can shoot some awesome flames too! Anyway, it's a blast, and I know that y'all would Love it. It's also really loud too! Anyway, I really recommend it to anyone who doesn't care about noise.