Steve, I knew something was different yesterday. I could not put my finger on it as I was in awe of the drive. Now that you mention it, I had to turn the radio down because it was too loud and that is NEVER the case. I was by myself, so I was not able to carry on a conversation.
Here is a pic of my install. You can see my compressor at the top of the pic. I am shooting the pic from the back of the rig under the rear of the coach. The compressor is wide open to the elements with the exception of the bottom mounting plate. The pic was taken after @ 24-30 hours sitting. I lose @ 80 psi: