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WRX Sti boost limits?

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Old Jan 17, 2001 | 10:27 PM
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Chris-WRX
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Curious to the fact that I own one, what is the maximum boost the sti can run at before meltdown?
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Old Jan 18, 2001 | 07:03 PM
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Why do you need to know?

Boost is not what gives you the massive power/torquew hike but the ignition advance does - but this requires water injection/bigger intercooler/Octane Booster, etc.

On a basic chip you should not be going over 1.4/1.5 bar. I run at about this on a slightly modded sti5
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Old Jan 18, 2001 | 09:29 PM
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Just curious steve, I've spoken to you in the past concerning the mongoose exhaust. No my car currently is running 1.4bar
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Old Jan 19, 2001 | 02:40 AM
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before i took delivery of my p1 i had a v5 sti running 1.2 bar all the time and 1.3 scramble boost for 10 seconds. i had the car running like this for a year with no problems
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Old Jan 19, 2001 | 10:09 AM
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1.4-1.5 bar on a basic chip? I assume you don't mean standard? reckon that'd lead to a few problems otherwise.........
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Old Jan 19, 2001 | 06:42 PM
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Craig Hardman?

Nahhhhh on a Link/Motec/Unichip - not the standard JECS

I run at 1.4-1.5 bar - depending on how cold - if its colder I get a bit more boost -used to be able to get a bit of overboost with a restictor - but the modified VF22 from Turbo dynamics does not need this - spools up to maximum at about 4000 revs - which is much more laggy than the VF28 and VF22 but it certainly kicks!

Just need a decent exhaust now - will prob go for the Scoobmania one - as the BPM is on its lasts legs - but it is 10 months old!
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Old Jan 21, 2001 | 05:52 PM
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would those figures be applicable to 95 WRX? Mine is only peaking at 0.7 BAR. Was 0.9 till I had my overboost problem cured
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Old Jan 22, 2001 | 09:20 AM
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Hi davy
Have you or do you intend to make any changes to the P1?
Cheers

NigeK
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