So, if you had a perfect intake, you would measure the same pitot pressure inside the runner, as you would read ambient static pressure at the inlet to the TB.  Since the TWM TB apparently has an excellent "static" style port, I'm only seeing part of the picture, which makes it look like my intake is lousy. Would you agree with that test?  If so, I can pull one of the plugs out of an injector port on the TWM, and install a pitot tube that reaches down into the air stream temporarily for testing.   That would end up about the same location as the stock MAP port on the TB.  

 

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By Golly, I think you have it.  I would be careful putting a hard pitot that might get into your new engine.  A simple small soft plastic line inserted somewhere in your runner with a 45-60 degree camfer on the end will measure most of the pressure we are trying to prove is there. Just make sure the largest opening in the cut off line is looking upstream at the incoming runner's air from the T/B.

 

That is the way I'm measuring mine and am showing 29.7 when ambient was probably 30. This was during the early part of a take off roll. Have not had the backbone to do a WOT flyby a few feet off down the field to see if I am capturing any of the potential pressure generated by the airspeed of the aircraft.

 

Bernie, are you going to make Slobvovia Flyin?