Installed the NewSouth MKV no buzz boost gauge tap today. Before I had one from parts my friends and I had laying around so it buzzed sometimes. The install was pretty easy since I just used the old boost gauge tube to pull it on through the firewall and into the cabin.
Once done I gave it a 30 minute test run and noticed a significant improvement. I do faintly hear a buzz now and then but its barely audible especially with road noise. Another bonus is that I am showing more PSI being held than before. I now show I can hold 20psi no problem which makes me think my old setup was leaking.