I put a set of the ebay long tubes and ory on my yukon the begining of the week and I must say its almost obnoxious loud now under load. I'm running a single 3in in 14in long magnaflow with dual 2 1/2 out on the same side in stock location.its not much louder if any at idle but has a diff sound and ok at cruise but at wot it sounds like the gates of hell opened up lol. I'm gona run it awhile and see if I get used to it but I may end up swaping out the 14in muffler for a 18in one and see how I like it. Ill try to get a video of it this weekend.