Spitfire IIa prop pitch

[wallydog69]

I was curious about how the Boost Gauge worked in relation to the changing the prop pitch in the Spitfire IIa. I've noticed that when increasing/decreasing my RPM setting that my manifold pressure will adjust accordingly... is this correct operation? I'm not changing my throttle at all. I'm typically used to seeing the MP stay consistent with the throttle applied so this is a bit confusing for me. Any response greatly appreciated.

[SEE]

All the accounts that I have read from BoB vets flying Spits during the BoB with CSP suggest that it was common practice to set PP for a combat RPM figure of 2650. This would be increased to around 2800 when engaging boost.

I tend to stick with those settings and they seem to work well in CloD in terms of engine management and reliability/performance though I do tweak if necessary to squeeze a bit more out of the Merlin.