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- - Boost pressure? (https://volvoforums.com/forum/volvo-850-16/boost-pressure-72359/)

Phil 850

07-20-2013 12:35 AM

Boost pressure?

I have been looking and think this is right but is stock boost pressure for my 95 850 turbo 9.5 psi?

97black850

07-20-2013 08:20 AM

I have read that on multiple sources, but I'm trying to get my 94 to that level lol

boxpin

07-20-2013 04:10 PM

Turbo: 9.6
R: 10.5

Phil 850

07-20-2013 04:48 PM

Quote:

Originally Posted by boxpin (Post 359957)

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.

rspi	07-20-2013 05:17 PM

Nice.

Phil 850

07-21-2013 12:24 AM

Quote:

Originally Posted by rspi (Post 359963)

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.

rspi	07-21-2013 05:38 AM

It could be over boosting due to a waste gate adjustment or something worn.

boxpin

07-22-2013 12:06 PM

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.

Vmax	07-22-2013 05:12 PM

Quote:

Originally Posted by Phil 850 (Post 359961)

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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