how much PSI

Reply Subscribe

Thread Tools

Search this Thread

Mar 26, 2004 | 08:44 PM

philioWRXman

Thread Starter

Registered User

Joined: Dec 2002

Posts: 1,051

From: Fairfield, CA

Car Info: 1998 Chevy S10... lowww

how much PSI

how much PSI does the new STi putout stock?

sorry for the noob question.

Mar 26, 2004 | 08:54 PM

Kevin M

Registered User

iTrader: (12)

Joined: Nov 2002

Posts: 18,369

From: Reno, NV

Car Info: 1993/2000/2001 GF4 mostly red

~14.5 psi

Mar 28, 2004 | 10:10 AM

Rocket Man

Registered User

iTrader: (1)

Joined: Jan 2004

Posts: 159

From: on a beach somewhere nice

Car Info: it's nice

burp.

Last edited by Rocket Man; May 21, 2005 at 09:30 AM.

Mar 28, 2004 | 12:18 PM

Mole177

Guest

Posts: n/a

12.5 bars??????

you're boosting 181.25lbs!

Mar 28, 2004 | 08:07 PM

Rocket Man

Registered User

iTrader: (1)

Joined: Jan 2004

Posts: 159

From: on a beach somewhere nice

Car Info: it's nice

oops. Sorry. About .12

Mar 29, 2004 | 12:31 AM

Kevin M

Registered User

iTrader: (12)

Joined: Nov 2002

Posts: 18,369

From: Reno, NV

Car Info: 1993/2000/2001 GF4 mostly red

Quote:

Originally posted by Rocket Man
oops. Sorry. About .12

That's kPa not bar.

.12 bar is less than 2 psi.

.12 kPa =~16 psi.

Quote:

Originally posted by Rocket Man
at 14.5 pounds, how much boost can you max out at? I can't bring it above 12.5 bars. Normal?

Not sure what you mean. 14.5 psi is the measurement for boost... that's what it is, 14.5 pounds. I would guess that max safe boost on the VF39 is ~15.5-16 psi, but I don't have that turbo personally.

Mar 29, 2004 | 09:05 PM

Rocket Man

Registered User

iTrader: (1)

Joined: Jan 2004

Posts: 159

From: on a beach somewhere nice

Car Info: it's nice

Quote:

Originally posted by BAN SUVS
That's kPa not bar.

.12 bar is less than 2 psi.

.12 kPa =~16 psi.

Not sure what you mean. 14.5 psi is the measurement for boost... that's what it is, 14.5 pounds. I would guess that max safe boost on the VF39 is ~15.5-16 psi, but I don't have that turbo personally.

thanks. How does kPa translate to psi and bars?

(sorry we don't have a nobie forum).

Mar 30, 2004 | 08:44 PM

raje7

Registered User

Joined: Mar 2004

Posts: 24

From: baton rouge

Car Info: 2004 sti

if you noticve where you start the boost from on the negative side youll see why same on mine alli can figure

Mar 30, 2004 | 09:07 PM

asianboy101

Registered User

Joined: Oct 2003

Posts: 436

From: cali

Car Info: sti wrb

you will max boost at 18.6, then fuel cut will kick in and you will get an cel. assuming you have an sti

Apr 1, 2004 | 06:50 PM

#10

Mach5WRX

Angry Dan

iTrader: (9)

Joined: Nov 2002

Posts: 7,183

From: www.turboculture.com

Car Info: 05 Evo VIII

I make around 1.1 bar

Apr 3, 2004 | 05:32 AM

#11

Hummer

Registered User

Joined: Jan 2003

Posts: 140

From: KC

Car Info: STi Stage 1

My max boost with the Xede is 16.5 psi. Detonation generally occurs over 17 psi.

Apr 6, 2004 | 08:14 AM

#12

Rick99gt

Guest

Posts: n/a

I am currently looking into adding a dual stage boost controler to my wifes xt for when I drive it on the weekends. Since the engines are both 2.5, Would it be safe to bump it to 16lbs psi, I beleave stock is 11.5. Only other mods i plan on doing is k&n and silencer removed

thanks
Rick C

Apr 8, 2004 | 10:11 PM

#13

Kevin M

Registered User

iTrader: (12)

Joined: Nov 2002

Posts: 18,369

From: Reno, NV

Car Info: 1993/2000/2001 GF4 mostly red

Quote:

Originally posted by Rick99gt
I am currently looking into adding a dual stage boost controler to my wifes xt for when I drive it on the weekends. Since the engines are both 2.5, Would it be safe to bump it to 16lbs psi, I beleave stock is 11.5. Only other mods i plan on doing is k&n and silencer removed

thanks
Rick C

No, that is very not safe. The XT turbo is much too small to go that high on boost. If you can't afford a reflash, don't mess with boost on a car as sophisticated as a modern Subaru.