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      11-24-2014, 07:51 PM   #1
801M3
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Normal vacuum for Supercharged e90/92?

I just recently installed my p3cars gauge from Autocouture. (love it btw)

My question is what are those of you who have the ability to monitor boost/vacuum seeing as far as vacuum goes at idle?

I'm concerned mine is low and if so i need to track down the issue..

Any help is appreciated..

Thanks!
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      11-24-2014, 10:15 PM   #2
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What vacuum reading are you seeing? Also what reading is the gauge giving you with the ignition on and the engine off? If it's not at 0, you probably need to calibrate the gauge.
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      11-24-2014, 11:11 PM   #3
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Quote:
Originally Posted by 801M3 View Post
I just recently installed my p3cars gauge from Autocouture. (love it btw)

My question is what are those of you who have the ability to monitor boost/vacuum seeing as far as vacuum goes at idle?

I'm concerned mine is low and if so i need to track down the issue..

Any help is appreciated..

Thanks!
let us know what your seeing at idle, it could be that you have a boost leak. I wish I could tell you but I believe I was somewhere in the 18ish for vacuum but I haven't driven my car since september ha
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      11-24-2014, 11:17 PM   #4
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It's a digital gauge with an analog sensor. (P3cars).
I be heard the blower causes a lower vacuum at idle.

I'm seeing about 13hg at idle. I am also at 4700ft asl.
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      11-25-2014, 04:20 PM   #5
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      11-26-2014, 10:27 AM   #6
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I am near sea level and will hit 18-22inhg vacuum.

Check out this site for reference, but your best bet is to email software support from ESS and get AJ to confirm that. You will hit less PSI the higher altitude you go as well.

http://www.anver.com/document/vacuum...20pressure.htm
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      11-26-2014, 10:49 AM   #7
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i see 18-20 on my s54 Vortech car.
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