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-   -   how much safe boost (http://www.perth-wrx.com/vb/general-subaru-discussion/43191-how-much-safe-boost.html)

GTB Liberty 01-07-2011 04:53 PM

Google is pretty useful but I'll help here a bit. A bar is an atmosphere at sea level, being 100 kilopascals or approx 14.5 psi.

As such, "smash in 2 bar" means two atmospheres or 200 kpa or 29 psi. This is also, gauge pressure not absolute pressure. Absolute pressure equals atmospheric pressure plus gauge pressure. So, 2 bar equals an absolute manifold pressure of 300 kpa.

I think ...

92 RS 01-07-2011 04:54 PM

^^ isaac fuckin newton :D :D

GTB Liberty 01-07-2011 04:58 PM

[QUOTE=92 RS;581198]^^ isaac fuckin newton :D :D[/QUOTE]

No ... Your thinking of Kato :D

Rossco 01-07-2011 05:31 PM

[QUOTE=davidy;581188]yeah sorry havnt updated pic sold that car years ago bought a 2000 bugeye last week just wanted a safe boost to run can you tell me how much is 1.5 bar and would you know what factory pound they run without boost control cheers[/QUOTE]

Stock is approximately 14psi (.9 bar).

[U][B]DO NOT[/B][/U] run more than this without a tune or your dakdak will go BOOM!

P.s it has factory boost control if it's stock.

PPS use the search function, this topic has been covered 100,000,000,000,000 times before.

tuna 01-07-2011 05:47 PM

factory fuel cut is around 1.2 bar of boost

i would recommend an ecu if you want to push it past that.

Kato 01-07-2011 05:51 PM

^^^ In all fairness running more than 1.2/1.3 bar on the stock TD04 hairdryer is a waste of time.

davidy 01-07-2011 06:03 PM

factory psi
 
ok thanks guys but ive been told not to go past 12 psi to play it safe from a subi mechanic but people are saying factory psi is between 13.5 and 14.5 psi or are they saying thats a safe psi to run i thought factory psi was 8 thats what psi it came out with stock

92 RS 01-07-2011 06:09 PM

thats low as fuck man. im not a bug owner but im fairly sure the factory psi is 14 to 15. maybe someone can post up or direct us to a factory boost list of all WRXs.

EXPLICIT 01-07-2011 06:11 PM

1 bar (14.5psi) is factory. You will require a retune of your ecu or a replacement and an upgraded fuel pump. Tune to a peak of 20psi. The pure physics of the factory turbo (td04) will cause it to taper fairly quickly. This will net you an honest 25% increase in power.

Kato 01-07-2011 06:12 PM

[QUOTE=davidy;581234]ok thanks guys but ive been told not to go past 12 psi to play it safe from a subi mechanic but people are saying factory psi is between 13.5 and 14.5 psi or are they saying thats a safe psi to run i thought factory psi was 8 thats what psi it came out with stock[/QUOTE]

A subi mechanic saying 12 psi? They aren't a Subaru mechanic then!

Do not change your boost until you get a tune done. They will set the correct boost for your car.

Stock boost is 14psi peak. Leave it there!


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