Well, checked plugs no sign of a cylinder not firing and totally intact. Checked all the leads for resistance all spot on. Cleaned all electrical connectors, re cleaned AFM element, cleaned IAC stepper motor and sprayed some upper engine cleaner in for good measure.

Still, got the problem?! To top it all off, the CEL light is NOT indicating any faults? Could any faults be showing up under an OBDII check that the CEL codes cannot display?

Anyone got a Tactrix or similar OBD2 cable they feel like lending out for a day or so?