That's what Justin has and it was REALLY close to a superflow bench for rated numbers on the same day. We used a HD shop vac at my house, worked well.
It was neat to see the flow diff from here at the beach @564ft elevation to sea level or below with dry desert/thin air.
the air will show diff numbers on the same bench, like how at home I get 277 cfm out of a port that in Indio only showed only 273-274cfm on the same bench, then reaffirmed the numbers on brians.
I honestly was sweating it cause if the superflow didnt show the same...it would seemingly make me out a liar, which Im not...and then I would have go and correct all the posted info...plus I would have wasted $1300.
Justin, I'd bet those number you got at the (Valve mod, SSR, Chamber) would be real close to the one my heads got with a good VJ. Think mine went static at .450, right, then held steady at that rate through .550