TurbofanDude wrote on Feb 21^st, 2011 at 8:27pm:

The thrust, speed settings, and drag, as well as payload to allow it to takeoff like a real one (or closer to it)

Thanks, that explains a lot. I fly with a group and 4 of us have the B52. Three of us match speeds but one lagged behind a lot speed wise, and he is the one that installed your mod. Now we know.