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Mar 25, 2004 | 02:02 PM

WickedWRX

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Joined: Jan 2003

Posts: 186

From: Union County, NJ

Car Info: Silver 2002 WRX

Boost

I know that everyone says that you can safely run 16psi on a stock wrx. Why is this? If i were to upgrade my fuel injectors, fuel pump, and fuel management system could i run say 20psi on my wrx? Or do they say only 16psi because of the internals?

Mar 25, 2004 | 03:54 PM

NluvwithXLR8ing

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Posts: 634

From: Nor Cal

If you upgrade the fuel system, and get it tuned you shouldnt have too much of a problem running more boost. The problem occurs when somebody increases boost but does not change anything else to accomadate it.

Mar 26, 2004 | 01:36 AM

sigma pi

9 to 5 mod

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Joined: Jan 2003

Posts: 57,389

From: Chavez Ravine

Car Info: 03 Impreza WRX

no. the stock turbo sucks thats why you cant. it cant hold more than 16 LBS stock. the turob also become inefficient after 15 lbs

Mar 26, 2004 | 03:45 AM

AWDrBelong2US

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I ran 22lbs of boost on the stock turbo (stuck wastegate), it was a fricken rocket, till it hit the fuel cut off.

Mar 26, 2004 | 06:20 AM

NluvwithXLR8ing

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Joined: Jul 2003

Posts: 634

From: Nor Cal

Quote:

Originally posted by AWDrBelong2US
I ran 22lbs of boost on the stock turbo (stuck wastegate), it was a fricken rocket, till it hit the fuel cut off.

For how long, didnt that cause alot of damage?

Mar 26, 2004 | 12:29 PM

liquid_sword

Registered User

Joined: Mar 2003

Posts: 81

From: san diego area

Car Info: silver 03 rex

damn yes im wondering to. what happend to your car with 22lbs of boost..??

Mar 26, 2004 | 01:36 PM

esracer

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Joined: Dec 2003

Posts: 1,663

From: Corpus Christi, Texas

Car Info: 2002 Honda S2000

Quote:

Originally posted by AWDrBelong2US
I ran 22lbs of boost on the stock turbo (stuck wastegate), it was a fricken rocket, till it hit the fuel cut off.

All I can say about that is OUCH!!

But yeah once you get over 15psi the turbo will not be that efficient, yes you will be make more power with the increase of psi but not as much as you would be with a bigger turbo.

Mar 27, 2004 | 05:58 PM

simpwrx02

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Posts: n/a

if you run that much boost on the stock turbo id recomend getting a aftermarket up pipe as well with out a cat...this ensure cat dosent go into turbo during lean fuel conditions.