Increase Ajax Timeout for import big XML files

Hello everyone. Im continuing with a problem detailed and almost fixed here:

Importing XML works fine, with “small data”, 20Mb for example.

Now I want to import 35Mb, and its looks like the ajax stop working in any time…

I want to know if i can increase the Ajax timeout for the XMl import native plugin…

For the side of php, in the php.ini I had all the values with big numbers.