need some hint to remove the two computers on the plastic box, i cant remove it, seems to be lock it., can be removed without tool, how?

 

It is a pain to do but can be done.
If you remove the black ECU box top half and middle half (Clips hold it on) then you will see purple pieces on the sides of the computer. You will need to slide them back with a skinny long screwdriver. There is 2 per computer. You have to slide each side a little at a time till they come loose.