The "n" is which resource it is (n2 is second turbine). I have analyzed the traffic quite a bit with both Charles and tamperdata. None of the requests can be modified because they are signed with a hash that the server can tell is replayed. Some of the more sensitive data is also encrypted with this hash. Figure out how to generate the hash and you will be able to do almost anything.
P.S. The "rapid resource" cheat actually still works, although not quite the same bytes as it used to. Honestly rapid resources are not much good, because even if you had max resources all the time, it would not really help because most of the PITA of the game is waiting for ships to build, research to complete, upgrades to complete etc. In other words, the only really useful hack will be one that lets you speed up those things.