Honestly, at this point in the game, I do not think you can do anything. I think it was said that you cant change anything with the XLT lux package. Or you would have to drop the package entirely. You can not just drop the spray in from the package.
I actually called Ford and asked the lady after she told me the same news as always if there was a hybrid problem. She said yes - chips. They have no chips. Apparently hybrids take more chips than the ecoboost.
I am a little confused reading this; I know you said you want to keep the original, but what exactly did they say to change? Just the spray in or something else?