Max PSI on stock turbo

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Jan 28, 2003 | 10:36 PM

blackwagonrx

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From: Daly City

Max PSI on stock turbo

I have a dual stage MBC. At low Boost I'm running at around 12-13 PSI at high boost, I'm running at 15-16 PSI. Will the stock turbo be able to handle it or should I run at a lower boost. All I have in my car is iridium spark plugs and Blitz intake. Thanks

Jan 28, 2003 | 10:52 PM

stealth-wrx

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From: Lake Forest, Calfornia

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i have had the factory turbo up to 21 psi with a huge nitrous shot. without it i could not see more than 18 psi. 15-16 psi is no problem. hope that helps.

Jan 28, 2003 | 11:04 PM

blackwagonrx

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Quote:

Originally posted by stealth-wrx
i have had the factory turbo up to 21 psi with a huge nitrous shot. without it i could not see more than 18 psi. 15-16 psi is no problem. hope that helps.

It helps a lot thanks.

Jan 29, 2003 | 01:15 PM

silverscoob

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got a ? what is the max psi on a scoob with only custom flowmaster and no rear cat

Jan 29, 2003 | 02:54 PM

stealth-wrx

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From: Lake Forest, Calfornia

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the factory fuel cut only alows 16.8 psi

Jan 30, 2003 | 09:41 PM

bozzwrx

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Hey all,

I hit fuel cut all the time, but in first and second, I can boost up to 2.8 bar, and WABAM!!! fuel cut =(. But for a stock turbo, it feels pretty darn fast...

Jerry

Jan 30, 2003 | 10:08 PM

Imprezer

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Car Info: 02 Black Legacy GT

2.8bar ~= 41 psi.

Jan 31, 2003 | 09:01 AM

silverscoob

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ok..... what is the safe max with flowmaster and a sbc i-d....... what can i boost to without doin something which will cost me?

Jan 31, 2003 | 09:13 AM

stealth-wrx

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From: Lake Forest, Calfornia

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imprezer:

how come we didn't get the factory option of boosting 41 psi. lol. i think my old 60-1 would even keep up with that.

Jan 31, 2003 | 11:00 AM

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mmboost

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Quote:

Originally posted by bozzwrx
Hey all,

I hit fuel cut all the time, but in first and second, I can boost up to 2.8 bar, and WABAM!!! fuel cut =(. But for a stock turbo, it feels pretty darn fast...

Jerry

I boost mine to 6495948653487435 bar. No fuel cut.

jason - in La La Land

Jan 31, 2003 | 01:16 PM

#11

WRXRON

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I think the most that you want to run on a stock turbo is 15.5-16 PSI. Neither the turbo nor the factory fuel system can support much more than that. Besdies you are approaching fuel cut with much more and that is for sure not gonna make you faster.

Jan 31, 2003 | 02:03 PM

#12

mmboost

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From: Longing for my ol' white '02 WRX :(

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Oh it can support more than that. But if you look at the compressor map you've passed peak efficient. However, this changes when you cool the charge... but 41psi? lol .. I don't think he was serious.

jason