As for installing, it only takes 5mins max to get the ECU out of the car, same ammount to get back in. To do the daughterboard install inside the ECU probably didn't take Matt (Nistune owner) more than 15mins to solder it in, someone competent with micro-soldering shouldn't take more than an hour. As for how long the tune will take, depends on the tuner (just a max power tune, or taking the time to do low/mid cruise etc)