I have to edit this, I reread a few posts
Gain, seems the only one that said that was not me so whom might this be aimed at
If you understand the simple rules of physics you can understand it takes energy to move something, if not in acceleration then it is spent elsewhere, winding up an engine does not make a car move forward faster, pretty simple.
I am on the side that says you lose HP twisting an engine but really I should of said torque but wait, I only said...
Anybody here have a real answer?
Not yet
I can see on a dyno, which is no more than a basic at best tuning tool, where the the initial load to wind up the whole drive train would be at the start of the run but once wound up it would not longer read but that does not negate the power lost for the initial wind up, it is there and will be there every time a car is accelerated on the dyno or real world use.