[ACE-OF-ACES]

Yeah but why not a D with a D.. or a B wioth a B..

From section 3

PERFORMANCE COMPARISON
The problem is finding real world test data to compare to that applies directly to the simulated plane. In the absence of such data substitutes can be used, if they are close to the simulated plane. This substituted data is typical test data from a variant of the simulated plane. In such cases the real world data may be adjusted to account for differences between the real world data and the simulated plane. Differences like engine horse power, power settings, external stores (typically gun pods), gross weight, etc.

But since no one seems to be in the mood to read something before they comment on something or reading and not grasping/getting it

Allow me to spell it out for you

The reason 'why' is because I don't have any real world data on a F-51D-30NA running at 75" 150 octane

Where as I do have real world data on a P-51B-15NA running at 75" 150 octane

Now if you have some real world data on a F-51D-30NA running at 75" 150 octane

Please pass it along and Ill use that

But until than

As noted in section 3

Ill have to make do with what I have

or gbetter yet... the HSFX 4.1D with eh UP D and the stock D.

That is a good idea..

Ill install UP1.8 and UP2.0 and see how they do vs. the P-51B