The range is dramatically increased but do to the enormous amounts of wires and cables all over the place I am still not able to reach the "miles" I would like. But.....I am able to do over a mile in my area, witch I could not do out the box with my P4.....sorry for taking soooo long to respond!
But I can't not stress it enough....those wack amps you get with the FPVLR antenna are no good and the battery is even worse! The antenna is no joke tho, That's why I went with the maxxuav amp and battery setup in conjunction with the FPVLR antenna that battery that comes with the FPVLR setup will get you a few flights at best before you need to charge it up again! And that can take you over an hour or more witch will require you to get more battery's. With the anker 13400mah battery I get a few "hole days" of flying before I need to charge it! Trust me the amps and battery from maxxuav is the way to go!