I want to pick some brains here. I have a 91 Hatch with a ZC swap. When I start it in the morning no smoke after the engine warms up(when the ECU goes into closed loop) it starts smoking. So basicly it seems when the computer is running in open loop it doesn't smoke, but as soon as it goes in closed loop it starts smoking(blueish white smoke). If it was the rings or valves would it not be smoking all the time???