Honestly I think unless you put it on a dyno it’s going to be hard to determine performance increase by seat of the pants feel and hammering it.
need to just go drive like you do every day and start with mpg differential.
I think if the truck gains 1-2mpg then of course there should be some hp/tq gain. Going around and flooring it because of greater throttle response will only tank the mpgs so important to not do this for a bit.
im definitely interested though, my ears are hearing increased sound at idle and under load vs stock setup.