you are seriously limiting your tuner options though if you go with the fcon , because afaik only authorised hks dealers can tune it of which there arent many
any autoronic/wolf/motec level ecu with stack of assignable and configurable outputs would be able to do n2o
but dont under estimate djetro and controller , you still have all the advantages of the power fc . cheap , plug and play (almost for the djetro) stock ide , stock ac , by far the widest support etc etc etc