Don't know what you mean by tinny?? You mean hollow?
We have X's on everything, some with FLowmaster, Pypes, and straight through shorty race mufflers etc... Nothing sounds tinny by my definition of the word that I'm thinking of. Matter of fact on a couple of these I've switched from "H" to "X" and couldn't tell any real difference in sound... Some are just louder than others thanks to the style or brand of muffler.
https://youtu.be/AOqwz3QlO5k
https://youtu.be/Iesvy0R3isA
https://youtu.be/er1z7PpqsnY
https://youtu.be/Ah_LjF_Sxow