It is used to ensure water and dust resistance, and is not switch or button or even dial.
If it has been removed, it cannot be reused.
Disassembly is not covered by warranty or repair service.

The top and bottom cases are sealed together with silicone to ensure water and dust resistance.
It will not open easily.
Disassembly is not covered by warranty or repair service.

To ensure water and dust resistance, a dummy connector is attached.
Remove the dummy connector, and then connect the USB cable connector.
Also, do not remove the white pin from the dummy connector as it has the same function.

Is the sensor in the correct place?
Refer to the installation manual for each car models and check the sensor place.

The stock boost pressure gauge displays the data from stock ECU.
This is a product that passes on false information from the boost sensor to the ECU in order to increase boost pressure, so it works properly even if boost pressure gauge doesn’t work precisely.
The exact boost pressure should be obtained by piping it from the surge tank.

This is a product that passes on false information from the boost sensor to the ECU in order to increase boost pressure.
The OBDII will show you the information (figures) spit out by the ECU that has been falsified, so even if the boost pressure gauge does not go up, it is still working properly.
The exact boost pressure should be obtained by piping it from the surge tank.

If you get an error code that has no relation to the pressure system, you may have connected to the wrong connector, so check the connection once again by referring to the picture in the instruction manual.

Load the existing data into Easy Writer and lower the value of the loaded data by -1 to -2 first.
It is possible to adjust up to ±25, but due to the vehicle's recognition limit, just because you put in -25 does not mean you will get more power.

Aren't you trying to change it with the numeric keys?
The value can be changed using the up and down arrow keys.

Since each electronic component has its own biases, there will be subtle individual differences between enclosures.
We have verified that the differences are taken into consideration, however, please be aware that when you create custom data.