Gen V'* spin slower to achieve the same boost. The sound is a product of the RPM'* the SC is spinning at. A gen V producing the same boost level as a Gen3 would actually be no louder. It would be quieter simply because it spins slower to produce the same level of boost because it'* more efficient.
That was a fun road trip that is sure to be repeated next year.
Bill, I installed that third set of rear spring rubber separator. It has stiffened up things much better. Total lift is only 3/4" over running with none at all.....about 1/4" per separator pair.
Those 110 mph sweeper on ramps can now be taken with greater stability.