90 percent better! I would say the only vibration I have left is due to my test pipes and the lack of support brackets on them.

Probably the biggest difference is that the RPM does not drop outside of the spec range of 600-700RPM, such as down to 500, which is where the the excessive vibration came from. I don't have an OBD reader connected into it, but it's definitely a lot closer to 660RPM+ in drive and 700 in park

Update Mar 03 2020 and 1750 miles later

So I notice it's a bit wonky with after an initial cold start (sometimes idling at 625), but after driving for a bit it will be consistent around 660RPM. The main difference, however, is that it no longer drops down to 500RPM. Again, I am running ISR Resonated Test Pipes so that is likely a contributor as well.