Hi eddie,
"If you have one engine freeze at 20% Torque can I pull the 128% with the other engine? Will the FADEC of the good engine approve the 128% if the failed engine is officially only "freeze" not "eng fail". What is max. possible TRQ?"
As long as you have frozen the "ill" engine below 30 % Torque you will have the OEI-Power on the "healthy"engine. But as others already stated, why not set the Torque of the frozen engine manually as much as you need it?
Best regards
Tom