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Too much boost!

Posted: Fri Feb 22, 2008 1:41 am
by LGT93
I just bought a 93 legacy turbo with 173K for $700 that needs some work but runs good. When i got the car it would cut out at about 5000 rpm at full throtle. The other day i hooked up a boost gauge and its running about 13psi! So is the cutting out the fuel cut out? What would cause to much boost? O and i just join the forum tonite and hope to learn alot.

Posted: Fri Feb 22, 2008 2:09 am
by vrg3
Check that your vacuum hoses are all hooked up right. There's a diagram in the Intake forum.

Posted: Fri Feb 22, 2008 2:35 am
by LGT93
Ok

Posted: Sat Mar 08, 2008 3:27 am
by LGT93
Well i finally got around to check for bad vaccum linse and there all look good. Could the waste gate actuator be rusted close?

Posted: Sat Mar 08, 2008 8:14 am
by vrg3
It could be. Try moving the wastegate actuator by hand; it should take a lot of effort but you should be able ot move it.

Posted: Sun Mar 09, 2008 12:49 am
by SubaruNation
our cars cut out @ !AROUND! 14 right?
maybe it's something else or your gauge isn't accurate?

yeah and you will learn alot :o, seriously

Posted: Sun Mar 09, 2008 1:06 am
by LGT93
I was told that the fuel cut out was 13psi. Thats right where it cuts out.

Posted: Sun Mar 09, 2008 4:39 am
by SubaruNation
well somebody better chime in b/c i heard 14

Posted: Sun Mar 09, 2008 5:38 am
by asc_up
It's technically a sustained 3 seconds of 12.75 PSI or more of boost that you get fuel cut.

Posted: Sun Mar 09, 2008 10:11 am
by Arctic Assassian
The boost level really depends on elevation.
It has to do with absolute pressure, not manifold pressure. do you have any mods at all?

Posted: Mon Mar 10, 2008 2:42 am
by LGT93
No the car is stock. Just bought it about a month ago.

Posted: Mon Mar 10, 2008 6:38 am
by SubaruNation
ok so @ 3K feet what would that be?
im safe @ 12 right?