Re: Any Dyno and Tuning shop in Shenzhen?
The Mercedes place in Nan Hai Boulevard in Shekou would be my starting place. When you do east from the basketball courts and soccer ground they are at the start of the newish building with the restaurants in it on the left side. If they haven't got a dyno they will know where one is. Otherwise just go to either MacCawleys or Mama's and ask there.
I have moved back to Australia by the way.