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Vacuum at idle

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Old Aug 10, 2007 | 08:23 PM
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Default Vacuum at idle

I got a crap used boost gauge thats off by about 1.5 but at idle i'm showing about 15in of vacuum. How much do you guys get?
Old Aug 10, 2007 | 08:37 PM
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20-22 is normal i believe at idle.
Old Aug 10, 2007 | 08:48 PM
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What altitude are you at?

If you are at 7k+ like me, than 18-20 is normal.
Old Aug 10, 2007 | 10:51 PM
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timing affects idle vac... if you're below 10 degrees your vacuum will drop from normal.
Old Aug 10, 2007 | 11:15 PM
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I havent checked the timng but if anything it's advanced because I get some ping with 93. I'd bet anything it's my POS gauge. Gonna order a new one now thanks. I was thinking 20-21 thanks for verifying

Edit: Just ordered a VDO
Old Aug 11, 2007 | 08:52 AM
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I show 21, on average, at idle here at sea level. That's on a Defi electronic gauge.

Ryan
Old Aug 11, 2007 | 10:41 AM
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Originally Posted by Ryan23
I show 21, on average, at idle here at sea level. That's on a Defi electronic gauge.

Ryan
baller
Old Aug 11, 2007 | 11:07 AM
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20 for me as well
Old Aug 11, 2007 | 11:10 AM
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22 for me
Old Aug 11, 2007 | 06:28 PM
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Originally Posted by Ryan23
I show 21, on average, at idle here at sea level. That's on a Defi electronic gauge.

Ryan
heh, he called you a baller.

too bad the defi only shows peaks and not minimums!
Old Aug 12, 2007 | 02:49 AM
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Originally Posted by y8s
heh, he called you a baller.

too bad the defi only shows peaks and not minimums!
Not sure what you mean? Are you saying it will only recall peak and not minimum? The set I have don't have recall anywho.

Ryan

P.S. SloS13: You don't have to be a baller, My Defi's were ~$150 each. I've never had an issue with Defi and they're spot on:


http://www.egauges.com/vdo_mult3.asp..._Racer&Units=E
Old Aug 12, 2007 | 08:47 AM
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$150 on a boost gauge is baller status where I come from but there's nothing wrong with that. I probably won't spend $150 on my whole exhaust and downpipe.
Old Aug 12, 2007 | 10:45 AM
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Originally Posted by Ryan23
Not sure what you mean? Are you saying it will only recall peak and not minimum? The set I have don't have recall anywho.

Ryan

oh I thought you had the Link setup. guess you aren't as baller as he thought

-baller
Old Aug 14, 2007 | 06:11 AM
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for 150...you could get 3 autometer gauges that are accurate enough to the eye...defi ftw if you want a simple install and nice looking gauges...but to monitor boost the best way is to use a map sensor that is logged!!!
Old Aug 14, 2007 | 06:22 AM
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22 here.
Old Aug 15, 2007 | 12:35 PM
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18-20 for me. You guys are running VERY high vacuum.

Reminds me when my teacher told me once that it wasn't possible for a car to have that much vacuum at idle. I had plenty of fun making fun of him.
Old Aug 15, 2007 | 06:57 PM
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my VDO gauge arrived today. 21 here.
Old Aug 15, 2007 | 09:33 PM
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20 here.
Old Aug 16, 2007 | 01:49 AM
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I actually have the prosport.com gages. I love them, and so far have been some of the more accurate gages. The price is very right also.
Old Aug 16, 2007 | 02:18 AM
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Hooray for 15. Siemens VDO gauge, if they're good enough for Porsche in the 70s, they're good enough for me.
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