I will! RIght now, I'm trying to isolate why it's getting the WideBand readings it's getting from only a head change.

At idle and cruise, it's running rich. But at WOT at peak boost, it's getting to 13.x.

Before the head change, idle was 14.8, cruise was 17.x and WOT was 11.x

Nothing else was changed in the setup.

I'm going to transfer the WB sensor to the passenger side log and see if it looks different/better there. Right now, it's in the down pipe. I'm also going to pull the plugs to see what they look like.