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Old 08-14-2009, 02:17 AM   #1
wrxmuch?
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Default Not hitting target boost 2004 wrx stage 2

My 2004 wrx wont go above 12.8 psi. I have turned the wastegate arms 2 turns shorter. This allowed the boost to come on much faster it seemed but doesnt raise the max psi shown on my ap.

Should I do the 3/16th's mod next?

P.s. I've tightened all my hoses and checked for leaks. The only thing I havent tried is the HWG map.

HWG is use at your own risk so that kinda makes me do:
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Old 08-14-2009, 05:37 AM   #2
jaxscuby
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is you car tuned? or is it stock ecu?
oops saw you have ap..
i would check for the restrictor in vacuum line from turbo
compressor to wastegate.

Last edited by jaxscuby; 08-14-2009 at 08:22 PM.
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Old 08-14-2009, 11:18 AM   #3
Dubstar112
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used to be 07 wrx 6speed

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What maps are you using? I take you are using an ots map because you have mentioned target boost. What is your target boost? 16.5?

I would try the HWG, if you try it once and hit a fuel cut then its not for you. Generally speaking hiting a fuel cut once isnt going to blow your car up. It is a saftey feature afterall. You could start testing it out by going slowly with the throttle and watch the AP. Any OTS map has a use at your own risk principle to it. They are designed for the masses and there is always a risk no matter how minute ..

Last edited by Dubstar112; 08-14-2009 at 11:27 AM.
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Old 08-15-2009, 12:20 AM   #4
wrxmuch?
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Quote:
Originally Posted by Dubstar112 View Post
What maps are you using? I take you are using an ots map because you have mentioned target boost. What is your target boost? 16.5?

I would try the HWG, if you try it once and hit a fuel cut then its not for you. Generally speaking hiting a fuel cut once isnt going to blow your car up. It is a saftey feature afterall. You could start testing it out by going slowly with the throttle and watch the AP. Any OTS map has a use at your own risk principle to it. They are designed for the masses and there is always a risk no matter how minute ..
I'm using the ots 1.30 stage 2 93 octane map. I'll try the HWG map.
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Old 02-19-2013, 10:39 PM   #5
sureshot007
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Did you ever figure this out - I can't seem to get about 13psi.
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Old 02-20-2013, 12:35 AM   #6
Wrex Roller
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I know on my my WRX I went stage 2 and the shop doing the reflash notice i was only running 9psi of boost no matter what. The problem ended up being I was missing the resistor pill on the vacuum line. hope that helps some
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Old 02-20-2013, 10:53 AM   #7
Mosting3
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@ what gears u guys don't see the boost u want? 1st gear?
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Old 02-20-2013, 10:56 AM   #8
sureshot007
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Any.

I'll check to see if the restrictor pill is in there. I bought the car mechanically stage 2 with no tune, so I've just been trying to tune it, and no matter how tight my wastegate arm is (or WGDC tables), the boost doesn't change.
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Old 02-20-2013, 11:07 AM   #9
endrswrd
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Be on the look out for exhaust leaks pre turbo. Also be sure to make sure you dont have the catted up pipe still. If you do, it can disintegrate(the cat material) at any point and take your turbo with it. It also keeps your EGTs high and prevents you from boosting to the higher PSIs
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Old 02-20-2013, 11:08 AM   #10
sureshot007
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I had smoke tested for leaks, and that's all good. Previous owner said he just installed an STI uppipe.
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Old 02-23-2013, 02:23 AM   #11
dollar5th
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Boost leak test?
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Old 02-28-2013, 02:56 AM   #12
Decepticon wrx
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I just went stage 1 in my wrx and only hitting 7 psi. Target is 13.5 so I called cobb and they told me to check my resistor pill. Looked at it and the hose was taped where it should be. Ordered a pill thinking it had to be missing since it was taped up. Ill find out Tuesday or Wednesday if it is that and ill let you know.
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