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Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

Boost pressure?

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Old 07-20-2013, 12:35 AM
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Default Boost pressure?
I have been looking and think this is right but is stock boost pressure for my 95 850 turbo 9.5 psi?
 
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Old 07-20-2013, 08:20 AM
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I have read that on multiple sources, but I'm trying to get my 94 to that level lol
 
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Old 07-20-2013, 04:10 PM
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Turbo: 9.6
R: 10.5
 
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Old 07-20-2013, 04:48 PM
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Originally Posted by boxpin
Turbo: 9.6
R: 10.5
Interesting, I had a chance yesterday to do just under a 1/4 mile wide open and watch my boost gauge and it went to a little over 11 before I had to let off.
 
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Old 07-20-2013, 05:17 PM
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Nice.
 
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Old 07-21-2013, 12:24 AM
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Originally Posted by rspi
Nice.
I had a chance to try it again and got the same results. I need to get a chance to push it longer but it looks good.
 
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Old 07-21-2013, 05:38 AM
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It could be over boosting due to a waste gate adjustment or something worn.
 
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Old 07-22-2013, 12:06 PM
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Thats called overboost. The ECU is set to boost to a specific setting. Due to mechanics, delay and other ungodly events it may overboost then settle. You asked what the stock settings are, there you go.
 
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Old 07-22-2013, 05:12 PM
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Originally Posted by Phil 850
Interesting, I had a chance yesterday to do just under a 1/4 mile wide open and watch my boost gauge and it went to a little over 11 before I had to let off.
For years I've heard from owners and auto magazines the R produces12psi for 30secs. As long as you're making 9.5 or more you're good.
 
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