Those 2 screws look like the security screws to retain the back of the ECU enclosure.
Watch where you drill….
My ecu sat about 15mm below the under surface but there is also a connector and loom towards the front.
![[Linked Image]](https://dl.dropboxusercontent.com/s/prrfe05qdpmp5hx/ecu%20enclosure.jpg)
Ps -You won’t be able see from the underside the unless sheet rubber cover is removed, awkward....
