Engine/Power - EJ20T (pre-2006 WRX and JDM) There is replacement for displacement, it is forced induction - OEM 2.0 liter turbo engines in the USDM WRX. 90-94 Legacy Turbo EJ22 turbo engines can also be discussed here.

Trouble adjusting boost

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Old Jan 11, 2004 | 02:39 AM
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Trouble adjusting boost

I'm not too sure what's going on, but I wanted to see if anyone had some input on possible causes. I am running a TD05-18g turbo with a UTEC for em, and of course the supporting mods. The problem is I can't turn the boost up past about 1 bar. I increased the boost values on the UTEC like crazy, with minimal, if any, change. Same for the bleeder valve. Kept opening it with no change. Any advice?
Old Jan 11, 2004 | 02:54 AM
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From: Flying on the H1 w/ 75 psi of compression on all 4 cyl
Car Info: PnP VF30 w/ STi injectors Perrin intake walbro fuel pump w/ a TXS TBE
Man i don't know if it matters but are you using the stock hoses between the wastegate actuator and the positive side of the turbo? Pretty much the stock T of hoses ?

Or could it be that the wastegate needs to be adjusted?? Good luck w/ the touble shootin man.
Old Jan 11, 2004 | 03:02 AM
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Yep, runing the stock hose with stock t. I think it's a problem with the wastegate, but I have no idea of how to adjust it.
Old Jan 11, 2004 | 03:10 AM
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From: Flying on the H1 w/ 75 psi of compression on all 4 cyl
Car Info: PnP VF30 w/ STi injectors Perrin intake walbro fuel pump w/ a TXS TBE
1) i couldv'e sworn the stock hoses to the stock T was bad??? Do you still have the factory boost controler connected w/ the hoses in anyway? You had it like this before right w/ the AUX boost controller hooked up in line w/ the turboXS bleed valve right or no?

2) That arm coming from the wastegate actuator when relesed from the swinging arm (the arm is released from a cottor pin)is able to spin either direction so that you can a adjust boost i think. Hmm i could be wrong i'm not totally sure? Your gonna have to search on that one.
Old Jan 11, 2004 | 03:18 AM
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It's set up with the stock T, then with the UTEC bleed valve tee'd off after that, as they recomend. I better search around some more.
Old Jan 11, 2004 | 03:28 AM
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From: Flying on the H1 w/ 75 psi of compression on all 4 cyl
Car Info: PnP VF30 w/ STi injectors Perrin intake walbro fuel pump w/ a TXS TBE
Hey Ryan if you wanna try something, run a hose from the positive side of the turbo to the wastegate actuator, that should run the max amount of that the actuator puts out. Usually 4-6 psi, just to see if its a boost problem or a tune problem. What do you think?
Old Jan 11, 2004 | 01:55 PM
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dude, .... you gonna use that mbc I gave you or not???


I'm having other issues with my s13, ... you should stop by Mike's today and we can help each other out.
Old Jan 12, 2004 | 01:26 AM
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I got it working. I had the hoses reversed. I'm such a nOOb. Got on the street and promptly hit 22psi Whoops. Hey Sean, I'll try to give you a call in the next couple of days, sorry I didn't get to stop by the other day, I got veto'ed.
Old Jan 12, 2004 | 01:45 AM
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From: Flying on the H1 w/ 75 psi of compression on all 4 cyl
Car Info: PnP VF30 w/ STi injectors Perrin intake walbro fuel pump w/ a TXS TBE
Sweet you got it fixed. So how does that thing feel man? Are you gonn be getting to the track anytime soon? Look foward to seeing you out there
Old Jan 12, 2004 | 01:58 AM
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Friday or saturday I am so there. I want to get into the 12's sooo much. Hey mario, did you get your VF-30 back?
Old Jan 12, 2004 | 02:02 AM
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From: Flying on the H1 w/ 75 psi of compression on all 4 cyl
Car Info: PnP VF30 w/ STi injectors Perrin intake walbro fuel pump w/ a TXS TBE
Yeah but i put it in justins STi, im still waiting on my EM its been 3 months my old mailing address has screwed me everything i had shipped to me went to japan . My EM is somewhere in Japan for all i know. it was sent from Colorado too. i'm about done waitng, so im about to go cobb stage 2 1/2
Old Jan 12, 2004 | 02:14 AM
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That sucks... Japan, huh? Well, if you guys go this weekend, holla!
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