Question for Boost pressure ?
05 July 2005, 01:59 PM
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Question for Boost pressure ?
What is the correct Boost pressure for a MY05 STI PPP in PSI and Bar ?
All these gauges and they have different ranges and some with "-" as well, do I need "-" too ?
All these gauges and they have different ranges and some with "-" as well, do I need "-" too ?
05 July 2005, 02:31 PM
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Originally Posted by What if ?
What is the correct Boost pressure for a MY05 STI PPP in PSI and Bar ?
All these gauges and they have different ranges and some with "-" as well, do I need "-" too ?
All these gauges and they have different ranges and some with "-" as well, do I need "-" too ?
Anyway I think the STI05+PPP should be 1.2 bar (or was it 1.3? hmm - no sure its 1.2)
06 July 2005, 12:55 PM
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Not sure, but according to my PSI 3 data monitor my WR1 (unmodded) has a recorded peak boost of 1.53 Bar so I guess that 1.3-1.4 is about right
Oh and lower limit about -0.8 (I think) so yes you do need the minus sign.
Oh and lower limit about -0.8 (I think) so yes you do need the minus sign.
Last edited by pmather; 06 July 2005 at 01:00 PM.
06 July 2005, 01:01 PM
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Originally Posted by pmather
Not sure, but according to my PSI 3 data monitor my WR1 (unmodded) has a recorded peak boost of 1.53 Bar so I guess that 1.3-1.4 is about right
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06 July 2005, 01:12 PM
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Aprox. 14.5psi to 1 bar or 100,000 pascals according to http://www.onlineconversion.com/
Incidently to my Blitz gauge my 05 wrx std made ~1.1 bar peak. Now it's been mapped it's 1.4 bar peak.
Incidently to my Blitz gauge my 05 wrx std made ~1.1 bar peak. Now it's been mapped it's 1.4 bar peak.
06 July 2005, 01:51 PM
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now we are getting closer.......so MY05 STI PPP - What is the boost pressure either in PSI or Bar or Pascals as we have the figure to convert bot not the figure to work it out from.
06 July 2005, 07:09 PM
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pretty much all standard scoobies run between 0.8 and 1.3 bar so a 1.5 bar (22psi) gauge will be fine, but a 2bar better.
the -ve is vacuum from the engine sucking in air when the turbo isn't blowing.
the -ve is vacuum from the engine sucking in air when the turbo isn't blowing.
06 July 2005, 07:14 PM
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Originally Posted by What if ?
seems quite a big difference for about 12 BHP, but at least I am getting closer figures. So at this rate a gauge that goes to 2 Bar is sufficient, I would still like to know what that is in PSI though as quite a few gauges are in PSI
07 July 2005, 07:53 AM
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Cheers. I ordered a -30 to +30 PSI Boost gauge with a Black face to match the other dials an a dash mounted Pod.
I still don't know what PSI my car (MY05 STI PPP) should show on full boost though............anyone care to answer for sure ? or who can I call to find out ?
I still don't know what PSI my car (MY05 STI PPP) should show on full boost though............anyone care to answer for sure ? or who can I call to find out ?
07 July 2005, 08:18 AM
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It's not an exact figure. Boost is held at between 1.3 & 1.4 bar in the midrange but it is possible to see slightly higher than that for very breif periods.
Mike
Mike
07 July 2005, 10:09 PM
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Originally Posted by MikeWood
It's not an exact figure. Boost is held at between 1.3 & 1.4 bar in the midrange but it is possible to see slightly higher than that for very breif periods.
Mike
Mike
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