I have tried this on my Android Car Head Unit using modemakias version of APK and it's working near perfect. Only thing I noticed is when I'm using TTS voice <Voice_TTS-nua-eng-uk-f1-lua-dri40-vssq5f22>, the voice guidance is too low and I can barely hear it when I'm playing music. Is this because this TTS voice file has low volume/sound? Also I noticed is that when i'm using the standard non-TTS voice, the music switches to mute whenever the GPS voice guidance announces direction. We'll this is because its the setting I have on my Car Head Unit that whenever the GPS sound is working, music sound is muted. However, this is not working using this TTS voice.

Also I have to say that the iGO folder is not on the standard directory which is supposed to be like com.nng.igo.primong_693527.igoworld in the SD card but its working. Thanks to both Boki_Srb and modemakias.