So far I can read PCM data with the keyon position without the car running. As soon as it is started, I'll get Data err's every couple of seconds to every five seconds form idle to about 1100 rpm. At higher rpm's, Data err's are almost constant, with a few Data ok's in between. Could this electrical noise caused by a grounding problem created by the Delteq unit or could it be from something else. Any advise were to start.