Sea Foam is bad on the MAF sensor per their own directions. They have another product that is intended to be sprayed in the intake via a tube just up from the throttle body, but down wind from the MAF sensor. It is called Sea Foam Spray cleaner and comes with the tube.
I used the brake vacuum line to ingest Sea Foam into the combustion chambers. I got no smoke at all from the process.
Sea Foam Deep Creep is actually an anti seize lubricant used to loosen rusted bolts/nuts. I would not use it for intake cleaning.