I forgot to add one detail...

I have the Wolfsburg edition, it has good sound proofing. It has carpet and a
bed cushion over the engine compartment.  I thought that is one of the
reasons why I barely hear any engine noise while driving, But after driving
around with only the engine cover and NO carpet or cushion, it STILL is quiet
while driving at 70 mph.  I only hear the whine of the power steering past
3800 RPMs (sounds like a turbo).
The muffler is a Dynomax Super Turbo with a Monza single resonator tip.

The counterweighted crank, balancing and muffler plus it is a flat four,
makes it quiet.

I have hear a lot about the noisy exhaust that the inlines use (Having less
back pressure does not make more power only loses low end power)

Robert

Robert