OK, I can hear the minds at work... I'll state my opinion in the interest of safety.

Regarding the older (reliable) Case Pressure sensing versions, some people think they can just mix & match ECU's & turbines - i.e. run an old 750 on a 1000 ECU to get the 28.8lbs thrust.

Thru the years there were some differences in case pressure settings (I believe due to compressor/stator vane changes) and exhaust nozzle size/shape.

The earlier 750's & 1000's had different CP setting than the later ones.

I can just see some idiot trying to run a 2200 Mbar ECU on a 750Plus designed for a Max of 1600 - its an accident waiting to happen & one many of us would not want to be around.

If you have a 750 that you want to make a 1000, I'd say contact Carlos at RTI. I believe he'd have the answers.