I've looked at the dyno run TVT did (I can't find it on their website), but I don't remember seeing A/F ratio.
Here's my end point...
We're all getting/have a CAI from one company or another, and we're all getting/have an ECU tune from one company or another.
All the CAI's increase the air (by the same amount to some extent, same hp/tq)
All the ECU tunes are basically the same.
So far only one company has addressed the air/fuel ratio mix saying it's a problem.
The only way for this company to tune your ECU is by sending them your ECU, therefore making your car undriveable - which is not really an option for people with one car!!!

You see what I want the A/F ratio for?