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Old 08-10-2007, 09:23 PM   #1
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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?
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Old 08-10-2007, 09:37 PM   #2
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20-22 is normal i believe at idle.
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Old 08-10-2007, 09:48 PM   #3
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What altitude are you at?

If you are at 7k+ like me, than 18-20 is normal.
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Old 08-10-2007, 11:51 PM   #4
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timing affects idle vac... if you're below 10 degrees your vacuum will drop from normal.
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Old 08-11-2007, 12:15 AM   #5
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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
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Old 08-11-2007, 09:52 AM   #6
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I show 21, on average, at idle here at sea level. That's on a Defi electronic gauge.

Ryan
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Old 08-11-2007, 11:41 AM   #7
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Quote:
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I show 21, on average, at idle here at sea level. That's on a Defi electronic gauge.

Ryan
baller
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Old 08-11-2007, 12:07 PM   #8
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20 for me as well
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Old 08-11-2007, 12:10 PM   #9
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22 for me
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Old 08-11-2007, 07:28 PM   #10
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Quote:
Originally Posted by Ryan23 View Post
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!
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Old 08-12-2007, 03:49 AM   #11
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Quote:
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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
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Old 08-12-2007, 09:47 AM   #12
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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.
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Old 08-12-2007, 11:45 AM   #13
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Quote:
Originally Posted by Ryan23 View Post
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
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Old 08-14-2007, 07:11 AM   #14
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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!!!
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Old 08-14-2007, 07:22 AM   #15
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22 here.
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Old 08-15-2007, 01:35 PM   #16
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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.
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Old 08-15-2007, 07:57 PM   #17
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my VDO gauge arrived today. 21 here.
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Old 08-15-2007, 10:33 PM   #18
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20 here.
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Old 08-16-2007, 02:49 AM   #19
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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.
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Old 08-16-2007, 03:18 AM   #20
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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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