Randoan I didn't understand much of what you wrote but now I will test with what Boki wrote to me i.e. I reinstall again but without putting the Pongo sys file I reinstall the apk and if I see the sys file it is created automatically I'm going to change the dpi inside them with the hope that the tts item works.

Thanks to you Boki I did as I wrote about and it worked. In the sys created in the dpi I put 320 and now it looks pretty big but when it comes to the tts voice you can hear it now but I have to intervene in the android settings and in audio I have to raise the audio media, so now I think it's a problem with my headunit uis 7862 and in any case after doing this, sometimes the tts voice starts late and sometimes the first word is not heard. Anyway thanks for the tips Boki.