Here we have my personal worst nightmare! I have never liked Two Brothers cans because I believe they are not very high quality, matter of fact the man that submitted this chart switched from TBR Slip-ons to Moriwaki's because of several qualities issues listed here:
leaked (loose fit)....broke holding strap from
looseness........resealed it with heat resistant silicon....only a little
looseness........left side went through 5 lower springs"
However the dyno numbers from the TBR system are definitely worthy of some credit even if the build quality isn't.
Below you will find both the dyno comparison as well as the correction factor data sheets.