I used to have some Tri y headers, forgot who, but they always leaked at the down pipe connection....ended up welding them closed, defeats the purpose of easy removal, haha.
How long did it take from order to delivery to get your X3s? Are you on the east coast? I would love to hear your setup. For that matter, anyone on east coast have X3s yet? I might be willing to travel to hear these up close. Thanks.