Suddenly Spit IIa on all the servers?

[IvanK]

Something to try, A relative Performance test On line.

Start On line with a mate. Spit II and 109E4 Level flight close formation at 250Kmh in the weeds. Then Go max power (non WEP non Boost Cutout) at the same time. Keep it going until you max out. Control Eng temps as required with the Rad/s. You might be surprised just how close you still are at the end point. The 109 driver will need to control prop pitch/RPM actively (2300rpm seems to be a good value) and what IAS you both end up with.

Then do the same in a climb test. Start out the same in close formation on the deck, reset altimeters so both of you are using the same setting. In the climb Spit climb at 160MPH, E4 at 250Kmh as these are the respective best ROC speeds for each aircraft. Post results here.