HHR SS Topics and information on the 2008-2010 Chevy HHR SS Turbocharged models.

boost numbers

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Old Nov 20, 2008 | 05:43 PM
  #1  
cannuck's Avatar
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Joined: 06-02-2008
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From: toronto
boost numbers

heard alot of guys saying too low or too high. got problems .

the best i can do is 12psi with no problems

what is the number the computer is set up for. would like to hear what your worst or best is with no issues, good running hhr.
Old Nov 20, 2008 | 06:17 PM
  #2  
JB Toronto SS's Avatar
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From: Toronto
That's funny, I was thinking about this today on the way home from work. :)

The best I can do on city streets is about 10psi (70kpa for us Canadians).

Considering the guage goes up to 200kpa, is this OK?
Old Nov 20, 2008 | 06:19 PM
  #3  
JB Toronto SS's Avatar
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For what it's worth, here is a PSI to KPA converter...

http://www.csgnetwork.com/presskpapsicvt.html
Old Nov 20, 2008 | 06:37 PM
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From: Southside of Houston Texas
I have has as much as 22 PSI
Old Nov 20, 2008 | 06:50 PM
  #5  
JB Toronto SS's Avatar
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Originally Posted by gcsd3742
I have has as much as 22 PSI
Is that highway? city? both?
Old Nov 20, 2008 | 07:05 PM
  #6  
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From: Akron Ohio
I may be wrong but from what I have read Boost will never be consistantly the same all the time.

It is computered controled based on Weather, Temps, Alt., and other factors. Because of this it should change based on conditions.

Some days I pull some good numbers and some days it is only 12-13 pounds.
Old Nov 20, 2008 | 07:13 PM
  #7  
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From: Southside of Houston Texas
Boost

I can lay down 22 psi damn near anytime day or night... of course mine aint stock I had Flaco tune it with H/P Tuners
Old Nov 20, 2008 | 09:05 PM
  #8  
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From: arlington texas
Originally Posted by gcsd3742
I can lay down 22 psi damn near anytime day or night... of course mine aint stock I had Flaco tune it with H/P Tuners
i lay down no psi
Old Nov 20, 2008 | 09:32 PM
  #9  
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From: Ontario Cdn
mine varies but I've never seen 15psi - least not yet.
Old Nov 20, 2008 | 10:12 PM
  #10  
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From: Cedarburg, WI
Mine was a pretty consistant 15 PSI tops, but I was able to bump that up to about 17 PSI by adjusting the wastegate rod slightly. I didn't wan't to go all the way, but figured it was set pretty conservative from the factory...



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