get oculus rift input in BGE

input.py

from game_engine_rift.rift import PyRift

def poll(rift):
  rift.poll()
  bge.logic.rotation = Quaternion((rift.rotation[0],
    rift.rotation[1],
    rift.rotation[2],
    rift.rotation[3]))

try:
  poll(bge.logic.rift)
except AttributeError:
  bge.logic.rift = PyRift()

Have you tried:

  bge.logic.rotation = Quaternion((rift.rotation[3],
    rift.rotation[0],
    rift.rotation[1],
    rift.rotation[2]))

This way you create the quaternion as WXYZ, as Blender expects it. I haven't tried, but you probably won't need your 'fix' either, once you use that.