correct.

I would imagine with your changing the intake and putting headers on, your A/F ratio has changed a bit. Probably running a bit leaner than before because those mods make the engine more efficient at moving air through it.

I presume they didn't hook up a wideband during the runs on the dyno then?

watch the videos. they are of the dynojet monitors, not the car itself. a/f ratio started at 13.5 and progress to 13.0-12.8

I did try to look at one of the videos, but I'll be honest, I can't see much in the videos concerning details.

But if those are the readings seen, that's not bad at all. Actually more on the rich side than the lean side without being overly so.

So there is some room for tweaking there when you get it tuned.