A system for providing end-use specific customization of gas turbine engine operation, the system comprising: a gas turbine engine ; a first processing unit configured to transmit an activation key, the activation key having one or more operational parameters associated therewith; and an engine controller in operable communication with the first processing unit and the gas turbine engine , the engine controller configured to receive the activation key transmitted by the first processing unit and operable, upon receipt of the activation key, to: verify the received activation key is correct by comparing the received activation key to one or more known-to-be-valid activation keys, enable the one or more operational parameters associated with the activation key in the gas turbine engine and the engine controller when the received activation key is correct, control the gas turbine engine using the enabled operational parameters; and wherein the system further comprises: a controller memory storage unit disposed within the engine controller , the controller memory storage unit having at least one known-to-be-valid activation key stored therein; and an engine memory storage unit disposed within the gas turbine engine , the engine memory storage unit having at least one known-to-be-valid activation key stored therein. a gas turbine engine ; a first processing unit configured to transmit an activation key, the activation key having one or more operational parameters associated therewith; and an engine controller in operable communication with the first processing unit and the gas turbine engine , the engine controller configured to receive the activation key transmitted by the first processing unit and operable, upon receipt of the activation key, to: verify the received activation key is correct by comparing the received activation key to one or more known-to-be-valid activation keys, enable the one or more operational parameters associated with the activation key in the gas turbine engine and the engine controller when the received activation key is correct, control the gas turbine engine using the enabled operational parameters; and wherein the system further comprises: a controller memory storage unit disposed within the engine controller , the controller memory storage unit having at least one known-to-be-valid activation key stored therein; and an engine memory storage unit disposed within the gas turbine engine , the engine memory storage unit having at least one known-to-be-valid activation key stored therein. verify the received activation key is correct by comparing the received activation key to one or more known-to-be-valid activation keys, enable the one or more operational parameters associated with the activation key in the gas turbine engine and the engine controller when the received activation key is correct, control the gas turbine engine using the enabled operational parameters; and wherein the system further comprises: a controller memory storage unit disposed within the engine controller , the controller memory storage unit having at least one known-to-be-valid activation key stored therein; and an engine memory storage unit disposed within the gas turbine engine , the engine memory storage unit having at least one known-to-be-valid activation key stored therein. <EOS>