I have replace most things to do with the ignision on the wagon 3.8 includong the oxy sensor, CAS, DFI, Core pack and now getting around the 11L/100km around town. It had fallen to 15L/100km and ran as ruff as a dog stalling and so on. But now the idle is all over the shop. Could this be the Throttle Body Sensor? Or the other bit that screws into the throttle body with the TBS. or something else? Has good power throu the rev range.