10 psi is spot on - that's your 22"Hg manifold vacuum (which is actually 10.8psi - near enough).
35 psi/243kPa at idle is also about right. A bit less than 250 kPa but within what I would expect with gauge error and differences between individual engines.
You should've seen 46 psi/320 kPa with the fuel pump running, engine off. It will be a bit lower with the pump off immediately after ignition (pump) on, so the 40 psi is OK with that happening.
Maybe go back to the engine management side of things. You've tried disconnecting the MAP and TPS. What happens if you try the same with the CTS and MAT?
The CTS should have resistance of about 2000 ohms at 25C, 190 ohms at 100C. The CTS signal wire is C10, yellow, at the ECM - something around 1.3V or a bit less between that and D2 (earth) would be right, engine hot.
The MAT should be about 3000 ohms at 25C, ~500 ohms at 60C. ~1-2V across C12 and A11 at ECM, depending on temp. in the inlet manifold.
The MAP voltage drops with vac. applied so that sounds OK if the voltage is seen at the ECM. Does the TPS signal voltage - C13 at the ECM, blue wire, D2 is the earth for that too - vary with throttle position?
Do you have a spare ECM or better yet, access to a running VN, VP, JD unleaded or JE Camira, LD Astra/N13 Pulsar that you can try your ECM in?