The pay Tunecu runs on Android but I don't think you can load a new tune with it. The PC version is free but for the cable. The single stock O2 sensor is narrow band. The stock tuning uses closed loop at lower throttle, mainly for emissions and fuel economy. You can get a wide band sensor with the PCV which it will use to determine fuel. With a good tune for fuel, either with PCV or diectly with TuneEcu, the narrow band sensor is unnecessary. Each cylinder can be tuned either with TuneEcu or the PCV. Maybe the dynojet ignition module can do each cylinder, don't know, but the stock tignition tuning goes by gear.