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Old 11 May 2005 | 07:00 PM
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Unhappy Stock Boost for STi2

I was wondering what is the standard boost on a '96 import STi2.
There are times on full boost where the reading is 0.8 bar and other times where the reading gets stack to 0.5~0.6 Bar.

Is that normal?If not why is the car loosing pressure on full boost.

I had new plugs and full service recently.

Please help!!!
Old 11 May 2005 | 07:31 PM
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Originally Posted by STI_V2
I was wondering what is the standard boost on a '96 import STi2.
There are times on full boost where the reading is 0.8 bar and other times where the reading gets stack to 0.5~0.6 Bar.

Is that normal?If not why is the car loosing pressure on full boost.

I had new plugs and full service recently.

Please help!!!
about 1.0 bar mate.
Old 11 May 2005 | 07:37 PM
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Sti should be nearer 1.1 bar, sounds like it may be going into safe mode due to detonation.

Is it a wagon? not sure if they were as high boost wise as the 4 door.

Do a diagnostic check first, http://www.saxonfields.freeserve.co....iag%20Page.htm

See what the error codes are, it doens't always show a check engine light unless something is very bad and stays that way.

Paul

Last edited by Pavlo; 11 May 2005 at 07:39 PM.
Old 11 May 2005 | 07:39 PM
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i do not know whether your model have got a boost solenoid valve near the firewall
its seem to be the problem as i have play with the voltage in the end from a 1 bar i got 0.5. with a 5 gear engage i got 1.4bar back to 1 bar but with the hook up only 0.5 all the way.
Old 11 May 2005 | 07:48 PM
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The car is a 4 door sallon and I am always running Optimax + NF Race Octane........I would be very surprised if I got detonation from the engine.......I will check the error code though just to make sure.
Old 12 May 2005 | 09:26 AM
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Originally Posted by Pavlo
Sti should be nearer 1.1 bar, sounds like it may be going into safe mode due to detonation.

Is it a wagon? not sure if they were as high boost wise as the 4 door.

Do a diagnostic check first, http://www.saxonfields.freeserve.co....iag%20Page.htm

See what the error codes are, it doens't always show a check engine light unless something is very bad and stays that way.

Paul
Nope defintely 1.0 bar when standard. I know this because i was able to raise the boost to 1.13bar with a scoobyECU and it was boosting higher. This was on a 6K ECU.

Stuart
Old 12 May 2005 | 10:38 AM
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They must vary then coulty, because I have an STI 2 ECU code (from onboard rom) here which says max target boost accross the board.

Paul
Old 12 May 2005 | 10:39 AM
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6K ECU?

Did it have a pink label?

Paul
Old 12 May 2005 | 10:46 AM
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My ecu does not have a pink label & its from a sti version 2 (6K)
Old 12 May 2005 | 10:59 AM
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Originally Posted by Pavlo
6K ECU?

Did it have a pink label?

Paul
Nope no pink label. Just the standard subaru label with 6K on it.
Old 12 May 2005 | 12:48 PM
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my sti v2 was about 0.9 bar when standerd
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