109 e4 performance

[Crumpp]

support my opinion that for the 109G the type was on average below the centre spec line

That is not proof. It is just the reality of aircraft. Even something as simple as an annual has resulted in the need for a complete readjustment of my propeller rpm to reach rated performance.

That my airplane flew below standard on its test flight after annual does not mean it is a sub performing example.

Crumpp says
Keep in mind it is probable that most aircraft off the assembly line will have squawks that need addressing.

Just because a new aircraft has squawks does not mean it will be rejected. Most are minor adjustments that will be taken care of relatively quickly.

I would expect the majority to perform slightly below average until those squawks are fixed. You can also have optimistic performance that represents a squawk that must be fixed. An adjustment of the propeller governor, fuel metering, timing, etc...can have a large impact on performance.

I am going to bow out and let you guys continue without my input.