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I just installed my boost guage with this method, and it is quick responding just like the video in that link.
I don't understand why this nylon tubing would be any different than injector size. With the same pressure behind them, stock 390's will flow less than 550's, just as it would take longer to fill extra volume (such as a bellows in a boost gauge... I have never taken apart a boost gauge so I don't know if there is a large volume to fill inside or not) with a thin nylon tube than it would with a wider ID hose. If there were no volume to fill then yeah, the air would flow at a higher velocity, and the nylon would work just as well as wider ID hose. What I am saying makes sense to me, if I am wrong, then please explain it better for me. Am I misunderstanding the "bellows" of a boost gauge?
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