Data transfer in Speed-Wiz works in two different ways. The screen
shots below shows two different calculations for the same vehicle to
illustrate how it works.

The first way that data transfer works is between inputs. Any data that
you input in a calculation is automatically updated for all calculations
for that vehicle, regardless of whether the other calculations are
currently in use (visible on the screen). This is illustrated by the
green circles in the screen shot below. Displacement and boost values
that were entered in the
flow calculation were automatically copied to the inputs for the
efficiency
calculation. Any calculation that uses any of the five inputs in the
flow calculations are automatically updated with the inputs from the
flow calculation as they are entered.

The second way that data transfer works is for calculated results. Any
calculated result that is used for inputs in other calculations is
automatically updated for all calculations for that vehicle, again
regardless of whether the other calculations are currently being used. This
is illustrated by the red circles in the screen shot below. The calculated
air flow and fuel flow from the flow calculation were transferred to the
inputs of the efficiency calculation and all other calculations that use
flow values for inputs. See
Calculation links for more details on calculating input values.