you are the second person to say it's louder, but in my experience it has been much quieter.
PS...for my rear most mount, I used a doubled over piece of 12 ga. speaker wire looped around the mounting points, which allowed the compressor to sit low enough to close the lid.
Maybe this is why it's quieter too.
PS...for my rear most mount, I used a doubled over piece of 12 ga. speaker wire looped around the mounting points, which allowed the compressor to sit low enough to close the lid.