Hi there,
The boost gauge is not accurate after fitting the Bluespark unit. It will most of the time read lower than the actual value of boost pressure that you are achieving. This is nothing to worry about, but is unavoidable due to being an electronic gauge that shows the value of boost pressure that the ECU believes to be true.
Those light sequences are quite normal, it will usually change to a blue light as the car is started.
Yes, please use the black bag to cover your unit. This is not necessary but is included to keep the unit clean in an under bonnet environment.
I hope this helps,
Best regards,
Edd