Hi, I have question about lambda sensors, in supercharger z22se, I have bought engine with supercharger on it already installed, unfortunately I don’t know anything about it, who do it and can answer my questions. I checked/control all the details/parts replace gaskets, oil etc and is on the way to instal in my vx220, but after control a wiring I discover that wiring have only one connector for lambda sensor (this before cat) the connector for lambda sensor after cat are missing. I don’t find anything on internet (I know what is a reason to have two) , but the question is if that was removed with intention and is standard on supercharged engine, or I should rewiring and add this connector to it? Thanks for all answers