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03-04-2011, 02:30 PM | #1 |
Scooby Newbie
Member#: 270050
Join Date: Jan 2011
Chapter/Region:
BAIC
Location: Bay Area, CA
Vehicle:2004 WRX World Rally Blue |
04 wrx ap stage 1 boost problems
Hey all, I have a 04 wrx and I'm running an ap with stage 1 and when I first used the map it was hitting 13.5 psi fine. Now though I can't manage anything over 9 psi for some reason. The only mods I have are a hayame 3 inch catback, cobb intake, and a perrin boost controller. What could be the reason for not hitting target boost anymore? Wastegate? Thanks in advance.
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03-04-2011, 02:43 PM | #2 |
Scooby Newbie
Member#: 208656
Join Date: Apr 2009
Chapter/Region:
NESIC
Location: Burlington, VT
Vehicle:2004 WRX Premium 4dr WR Blue |
wow, my stage one hit 16lbs of boost...
yeah anyways, this could be a plethora of things. Some point at the wastegate actuator getting stuck (many subie owners PBblast this regularly). You hearing any weird noises? maybe a boost leak? Is this boost controller digital? pneumatic? i could see you running into a problem with the COBB AP getting confused by the controller. I would say your in some half-limp mode, but thats usually associated with a check engine light... any more info you could give us? |
03-04-2011, 02:46 PM | #3 |
Scooby Specialist
Member#: 255153
Join Date: Aug 2010
Chapter/Region:
TXIC
Location: FORT HOOD TX.
Vehicle:'02 Corn fed bugeye '11 forester 2.5X SWP |
Possibly a wastegate problem. Check to make sure the little c clip on the actuator arm is not missing.
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03-04-2011, 02:46 PM | #4 |
Scooby Newbie
Member#: 270050
Join Date: Jan 2011
Chapter/Region:
BAIC
Location: Bay Area, CA
Vehicle:2004 WRX World Rally Blue |
I'm not hearing any weird noices and I thought it was a boost leak at first but I'm not so sure now. And it's just a manual boost controller that you spin to open or close it more. Think I should try to take the boost controller out and run the ap with just that? What other info would help figure out the problem?
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03-04-2011, 02:55 PM | #5 |
Scooby Newbie
Member#: 270050
Join Date: Jan 2011
Chapter/Region:
BAIC
Location: Bay Area, CA
Vehicle:2004 WRX World Rally Blue |
The c clip is still on the actuator arm.
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03-04-2011, 03:46 PM | #6 |
Scooby Specialist
Member#: 255153
Join Date: Aug 2010
Chapter/Region:
TXIC
Location: FORT HOOD TX.
Vehicle:'02 Corn fed bugeye '11 forester 2.5X SWP |
It could be something to do with the mbc. Me personally, I would take it off and run an ebcs.
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03-04-2011, 03:50 PM | #7 |
Scooby Newbie
Member#: 270050
Join Date: Jan 2011
Chapter/Region:
BAIC
Location: Bay Area, CA
Vehicle:2004 WRX World Rally Blue |
I'll look into doing that, thanks.
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03-04-2011, 04:14 PM | #8 |
Scooby Specialist
Member#: 151045
Join Date: Jun 2007
Location: Pennsylvania
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You're using a Cobb Stage 1 map? With a MBC? Yikes...
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03-04-2011, 04:16 PM | #9 |
Scooby Newbie
Member#: 270050
Join Date: Jan 2011
Chapter/Region:
BAIC
Location: Bay Area, CA
Vehicle:2004 WRX World Rally Blue |
Yeah I had the mbc first because I just wanted to spool up a little sooner and get a few more psi out of the stock turbo, nothing big. And then I ended getting the Cobb ap too.
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03-04-2011, 04:18 PM | #10 |
Scooby Specialist
Member#: 151045
Join Date: Jun 2007
Location: Pennsylvania
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03-04-2011, 04:32 PM | #11 |
Scooby Specialist
Member#: 80864
Join Date: Feb 2005
Chapter/Region:
AKIC
Vehicle:I'll have the tuna. No crust. |
switch to stage 2 if you want more power.
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03-04-2011, 04:43 PM | #12 |
Scooby Specialist
Member#: 224785
Join Date: Sep 2009
Chapter/Region:
MWSOC
Location: neenah
Vehicle:2005 wrx-jdm207 i went black... |
find urself a stock boost controller. i have a three port i might install so pm me and ill send u my stock one for cheap.
as far as i know most off the shelf maps use the stock boost controller |
03-04-2011, 04:49 PM | #13 |
Scooby Specialist
Member#: 187013
Join Date: Aug 2008
Chapter/Region:
MWSOC
Location: Buffalo Grove, IL
Vehicle:2013 ST |
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03-04-2011, 05:04 PM | #14 |
Scooby Newbie
Member#: 270050
Join Date: Jan 2011
Chapter/Region:
BAIC
Location: Bay Area, CA
Vehicle:2004 WRX World Rally Blue |
I'm going to put my stock one back in for now, I just have to get one of the hoses and some clamps from the subie dealer tomorrow. Not gonna use the mbc unless I actually go get it protuned when I get my up and down.
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