I am about to install my boost guage (autometer) and I am going to use this method.
As far as Bernouli's principle is concerned, I don't know... but I do know that it is extremely hard to blow through that thin nylon tubing. It makes sense to me that using wider ID tubing would help out boost guage performance, it breathes with less resistance. If there is a bellows to fill inside the boost guage (if that is how it works) then there would be a delay when using nylon tubing, since a lot of air has to flow through that extremely thin tube.
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