i have a couple of intake manifolds and was thinking about doing some flow tests. any suggestions on how to do this with typical materials found at home?

i can borrow some regulators and rotameters from work if needed.

also, any manifold cleaning techniques i should shy away from that might be interpreted as enhancing the manifold?

i am assuming that i can do the standard quick bead blast to get the carbon and crap out from the PCV vent, etc. but should not sandblast it for 30 minutes per flow path.......