My petition is filed for houston but i am travelling to Austin for a few days to stay with my friends before i go to Houston? so will there be any issue in POE please let me know ? if there are any suggestions please let me know.
I would say it is ok as both are in same states. However, keep in mind:
You may be asked at PoE about it. Your employer should support this travel plan and you should be able to convince that you would travel to Houston soon. If you will be taking domestic flight, then have those tickets and itinerary handy.
On H-1, your primary job is employment. Don’t stay too long at friend’s place so that you start accumulating out of status. Again, employer should be willing to this travel plan and ready to pay the salary as per the LCA.