Originally Posted by bryan elam

Its none of the above. Its your Xlink. I had version 1 and it did all the time. Bought version 2 and it was much much better, however, if I sit at idle for long periods of time, or raced the engine hard and let off the gas pedal quickly it will go into reduced engine power. Turn the ignition off, and wait ten seconds then restart and it correct itself. I believe its a heat soak issues with the electronics of the xlink. I never had any of the problems until I started using the xlink for a bigger throttle body.