How to prepare for engine dyno?

roccodart440 said
Super sucker

Every time I've seen one back to back on a dyno session they make more tq and more hp. 10-20 more everytime.

Yes, a Super Sucker, 13 more hp on back to back pulls, no other changes. The thing that got me was the fact that the AFR's from side to side were over one point off before the install and were within a couple tenths after.