Tried s300 and ecu in another vehicle same results. The only new findings is check engine flashes when the accelerator is pressed then turns off but still will not give any codes.
Wow. I'm having this exact same problem. Will email support shortly.
All of a sudden the car doesn't want to start. Will connect and Datalog, however, both the red & green LEDs flash very quickly while connected. Disconnect and it's solid green. I can get it to start IF I give it about 40% throttle, but it can't idle on its own. It won't rev past ~2,500 RPM and the CEL flashes quickly each time it hits this rev limit.
Things I have eliminated by testing with spare parts:
My buddy let me borrow his new S300 V2, but since it hasn't been registered yet, I can't do much with it...