The situation is currently as follows:
- after having (re)checked all electrical circuits, not being able to read the ECU though (as no corresponding program/hardware available), I had asked the garage to recheck the fuel pressure at the ramp. Fuel pressure at the ramp is crucial to command the injectors;
- ultimately they found out that at least one on the pumps is dead (previously when turning ignition key and cranking the engine, one heard the pump work, without being able to tell if all pumps work, so wrongly assuming that pumps were working; fuel was available at the ramp, but fuel pressure had not been checked); now they checked more thoroughly actually feeling the pumps while having ignition on!
- so one of the LP pumps being dead, I decided to replace the 2 LP pumps before going any further and swapping ECU's;
- in this process I found out actually that there is not only one pump, but 3 as on the attached fuel system diagram (
may be incomplete).
- have ordered the pumps last Monday from
www.competitionsupplies.com in Silverstone, pumps and fittings arrived Thursday and they will be mounted today.
..... so let's wait and see what it will bring