If by WOT, you mean Wide Open Throttle, that is not how it works according to the manual.
From the Description & Operation section of the Supercharger:
"SYSTEM DESCRIPTION
This system controls supercharged air according to the engine operating conditions.

This control operation is accomplished through the ECM and the Supercharger Bypass(SCB) valve control solenoid valve.

When the solenoid valve is ON, the SCB valve shuts. Then intake air is lead to supercharger, and supercharged air is sent to the cylinder.

When the solenoid valve is OFF, the SCB valve opens. Then intake air is sent to the cylinder directly.

When the ECM detects any of the following conditions, current does not flow through the solenoid valve:

Engine stopped
Engine starting
High- load, high-speed engine operation
Excessively low engine coolant temperature
Mass air flow sensor malfunction
Engine coolant temperature sensor malfunction
Throttle position sensor malfunction"