Predictions obtained with NarX closeloop

Hi, I have several questions about Red NarX Precision results are published in the next post:

http://www.mathworks.es/matlabcentral/answers/65925-as-used-in-closed-loop-network-narx-reality

I wonder how I can improve the accuracy of my network. I have the code posted in previous post the results on its accuracy

My second question is this:

What should I do to make 10 predictions knowing only the inputs of today, ie I introduce inputs in NarX closeloop today (11/03/2013) and I want to get my targets prediction of the next 10 days, which also use the predicted values for 10 predictions for future inputs do not know. How should I?

I've done a similar question in the next post, In case of emergency anyone cares deeper into the subject.

http://www.mathworks.es/matlabcentral/answers/30885-preparets-command-in-matlab-ver-7-9-0-r2009b

Thank you very much.