Bear in mind, there was no mention of BMEP in the report, it's only been a point of discussion in this thread.
Is that another inaccuracy of the (interim) report? Do they actually mean the BMEP when they say "the captain stated that the manifold pressure was low" ?
Do they mean the BMEP indicators when they say "the manifold pressure gauge, which is a dual indicator for the left and right engine, was removed, repaired and refitted to the Aircraft" ?
Does manifold pressure mean anything on these high power piston engines? Is it as important as on a typical SEP with CS Propeller? Or is BMEP the parameter you use to manage engine power?
Is the removed and repaired unit somehow linked to the autofeather system?