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Old 07-30-11, 11:58 AM   #1
yog22
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Default only boosting 10 psi....

so i bought this car about 2 weeks ago. its an 06 sti. i really know nothing about them. i love the car to death and seems to run good but i have never been in another one to compare it to. but someone told me that it should be pushing 14 or 15 psi stock. and i'm only pushing 10. it never gets above that. the car has a turbo back exhaust and a turbo timer... should it be pushing more? i don't even know where to start. help!
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Old 07-30-11, 12:08 PM   #2
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Default Re: only boosting 10 psi....

Was the car tuned for the turbo back exhaust? Do you have an AP?
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Old 07-30-11, 12:25 PM   #3
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Default Re: only boosting 10 psi....

im pretty sure its never been tuned.... im hopefully gettin it tuned next week. as well as puttin a boost controller on
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Old 07-30-11, 01:26 PM   #4
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Default Re: only boosting 10 psi....

What are you basing this 10 psi off of? What kind of boost gauge do you have?

You might need to do a boost leak test.

You definately need to tune, and with a TBE you are probably over boosting.

A turbo timer is not needed on these cars, since the turbo is water cooled.
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Old 07-30-11, 03:08 PM   #5
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Default Re: only boosting 10 psi....

Quote:
Originally Posted by ninjaboy76 View Post
What are you basing this 10 psi off of? What kind of boost gauge do you have?

You might need to do a boost leak test.

You definately need to tune, and with a TBE you are probably over boosting.

A turbo timer is not needed on these cars, since the turbo is water cooled.


i'm not sure what kiind of boost gauge it is. it was in the car when i bought it.

how do i do a boost leak test?

ya hopefully tunin it next wed, what do u mean over boosting? sorry i'm a noob. never owned a turbo car til now.

and ya the timer came with so i guess it cant hurt right
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Old 07-30-11, 04:31 PM   #6
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Default Re: only boosting 10 psi....

Just means that it should be boosting higher than normal since it has a downpipe, so I'd bet there's almost definitely a boost leak somewhere.

And nope, only thing a turbo timer is gonna hurt is your wallet, hell a lot of people still think its a good idea to idle for 30 sec or so even with the water cooled turbos
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Old 07-30-11, 04:31 PM   #7
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Default Re: only boosting 10 psi....

Check your boost control solenoid, my buddy's 04 was only hitting 12 lbs on a stage 2 setup. I swapped mine with his and it fixed the problem.
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Old 07-30-11, 07:11 PM   #8
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Default Re: only boosting 10 psi....

I was wanting to know if it was a factory boost gauge cause if it is, it reads differently. It doesn't read in psi. It reads in Mpa which 0.1 Mpa = 14.5 psi.
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Old 07-30-11, 07:17 PM   #9
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Default Re: only boosting 10 psi....

Quote:
Originally Posted by STiKE20 View Post
Check your boost control solenoid...
Bingo!
Look at post# 15:
New turbo, feels slower?
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Old 07-31-11, 03:44 PM   #10
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Default Re: only boosting 10 psi....

ok where do i find the boost control solenoid? and also while i was under the car i noticed that where the downpipe bolts up to the turbo one of the bolts is missing.. actually the bolt got broken off somehow. if thats leaking would that cause it to not boost all the way?
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