I have been running a set since 2012 without any issues. I have never heard of one failing either. Seems to be a good product and was just wondering as mine are getting old now at almost 15 years in service.
I used the Xied on my 07 Heritage for four years before I added the PV-2 tuner. It worked great to richen up the lean fuel settings from the factory, no issues at all.
They have been sitting on the shelf since installing the PV. Maybe I should list them in classified ads. If anyone is interested let me know.