Something must have been inadvertently taken out of context, as all of the
feedback we've received from those owners you've noted, has been very
much the opposite of that.
The Supercharger delivers immediate power, making more than 6 lbs. of
boost as low as 2,500 rpm. The boost in very linear and increases through
the entire rev range.
This is precisely why the car can accelerate from 0-100kph in as little as
2.2 seconds, and 100-200kph in under 4.7 seconds, both of which are
significantly faster than stock.