Thanks, I found that too, problem is it does not tell you what the nominal fuel pressure should be. I guess is should be around 5 bar but I have no idea!
That's good work with the oil pressure switch!
My car seems to be going a little better now with the colder weather, far less sluggish, and better low end torque. It must be a mixture issue, hopefully servicing the injectors, cleaning and de-coking the heads and cylinders and changing the O2 sensors will improve things!