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Discussion Starter · #1 ·
I just installed my boost gauge yesterday from Digital Square Boost gauge . the only thing is that i get at idle -10.8 or -11 psi and i how some of the guys get -19,-20 and so, so i wanted to how am i ok or what? and what do u read at idle. my wot boost are 14.5 to 17.2 depending on the gear.

Some help will be appreciate :)
 

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I have a digital boost gauge and also get -10 to -12 at idle. On decel in gear, I will get up to -14- to -15 or so.
 

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Vaccuum is usually read in inches of mercury (in./hg). Your guage is showing it in psi. The conversion of psi -> in./hg. is multiply psi x 2.036. That ends up to about 22 in./hg which is correct.
 

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I get -14-15 when in idle after the car is warmed up.
 
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