Subaru Tech All We'll Drive

stock boost?

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Old Mar 22, 2006 | 05:07 PM
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Default stock boost?

@ what boost do the stock STi's run? and up to what PSI are they capable to with stock internals? Like just basic bolt ons: BOV, exhaust, intake, etc.
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Old Mar 22, 2006 | 06:40 PM
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Doing a free flowing turbo-back exhaust can cause boost creep of over 20psi at WOT.
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Old Mar 22, 2006 | 10:36 PM
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well im at 1.35 bar safely and the car is running like a champ! If you are wondering, thats not thru all gears. i have the avc-r set different in each gear. Reps for scott for my tune!
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Old Mar 23, 2006 | 11:09 AM
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Originally Posted by stiscooby
well im at 1.35 bar safely and the car is running like a champ! If you are wondering, thats not thru all gears. i have the avc-r set different in each gear. Reps for scott for my tune!
Yes, but you're tuned for it. When the stock STi is creeping like that, the ECU may not compensate fully for it.

1.35bar is 19.5 PSI, for those without a handy converter program handy
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Old Mar 23, 2006 | 12:03 PM
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yah i am driving a '05 wrx and it has a turbo back and BOV and the car hits fuel cut @ 18lbs about 97-102mph and it is a pain in the a$$. but a tune and intake will take care of that.

btw- faded where is dougs shop at?
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Old Mar 23, 2006 | 12:40 PM
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Originally Posted by stiscooby
well im at 1.35 bar safely and the car is running like a champ! If you are wondering, thats not thru all gears. i have the avc-r set different in each gear. Reps for scott for my tune!
Scott tuned you for > 18.8? He told me that 18.8 was optimum. Unless you're not running the stock turbo...
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Old Mar 23, 2006 | 02:53 PM
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not 18.8, its 19.5. Yes, i am on a stock turbo. i have an avc-r which, suprisingly, works very efficiently. ill call you and tell you what he did.
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