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boost gauges

  #1  
Old 04-15-2005 | 02:44 AM
Skibos's Avatar
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Default boost gauges

hey what is the difference on a boost gauge between vac and psi can i get one with just psi have no clue but want to pick one up tomorrow and put it in thx ............
 
  #2  
Old 04-15-2005 | 05:03 AM
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Default RE: boost gauges

you want one with Vac also.

Vac will tell you how well your car is in vacuum when not accelerating/under boost (which is your psi).
It can tell you if you have a leak under vacuum.
 
  #3  
Old 04-15-2005 | 05:30 AM
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Default RE: boost gauges

A vac/boost guage is only a few dollars more than a boost gauge - well worth the extra $$.

Like brrman said, when you accelerate, you make boost (psi or bar). When you decelerate, you make vacuum (inches Hg).

You could have a leak in either direction.
 
  #4  
Old 04-15-2005 | 01:21 PM
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Default RE: boost gauges

I currently have a vac leak and it is driving me nuts.
I was picking around at the vacuum system last night and found a small crack in a hose leading from my n75 valve.
This morning I can't get any more than 5 psi. LOL - checked the vag on the way to work and realized I didn't plug the
n75 valve back in (N75 open circuit code)

 
  #5  
Old 04-15-2005 | 02:33 PM
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Default RE: boost gauges

oooo ok i get it now i had a feeling that was how it worked im on my way out to get an auto meter as soon as i take a shower ...... hopefully it is a decent one ..... welll thanks guys
 
  #6  
Old 04-15-2005 | 03:46 PM
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Default RE: boost gauges

just get the boost gauge it looks cooler than the vac/boost guage
 
  #7  
Old 04-15-2005 | 03:47 PM
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Default RE: boost gauges

heh heh...easy to say when you don't have a vacuum system.
 
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