That was quite helpful thank you. Except for one thing... I think you just told me that I'm going to have that flat spot forever.
Perhaps, seeing as I use an AVC-R, I should drop the boost at that point then bring it back up later. Or maybe not now but when I get a fuel computer.
Oh hang on. Applying that to our problems... By upping the boost we are raising the voltage of the AFM, ECU pulls timing to protect... so.... back to my last para... I should maybe drop the boost a little between 5600 rpm and 6200 rpm, thus dropping the voltage the AFM sends to the ECU, which doesn't see any problem worth protecting the engine from, therefore I should pick up power through more advanced timing.
Does this sound right?