I was going to install a wideband 02 with it's controller, but the tuner I'm talking to says he's rather me have a bung installed so he can temporarily install his own wideband setup for tuning purposes and remove once he's done.
If this is possible, what would be the advantage of installing a wideband setup permanently?
If there there is some advantage for having this installed permanently, I'd like to know. Otherwise, I'll save my money and let him use his setup.