This mod basically relocates the stock GPS module to the top of the shell then some sort of foil or copper is used to isolate the GPS Module from interference with the hopes that it will pick up more satellites or to possibly get a quicker GPS lock. In this video I will test if it really works or not .. the first video I did not have them connected to anything that could monitor the amount of satellites and was only testing locking speed in this video we will test both! Fly Safe My Friends and thanks for watching