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03-21-2013, 11:36 AM | #1 |
Scooby Newbie
Member#: 180912
Join Date: May 2008
Chapter/Region:
SCIC
Location: SoCal
Vehicle:2004 WRX PSM |
Boost oscillation (yes I've searched and nothing helped)
So before someone posts "google search" or "just search for oscillation duh!" I have done so extensively and found nothing that helped.
04 wrx sedan 120k miles Injen CAI 5zigen CBE grimmspeed coated UP finely tuned MAF myself replaced boost control T hose and restrictor pill (so yes I KNOW it is there) Factory BCS seems to be working fine Recently cleaned MAF sensor and IACV (2-3k miles ago) WG arm has never been lengthened or shortened Boost is oscillating wildly at WOT, it will spike up a little past .1mpa (yes I have the stupid lamco gauge) and then fly back to .5mpa and repeat constantly. The oscillation is slightly less violent with higher ambient air temps. Log posted, any help is appreciated. https://docs.google.com/file/d/0B9np...it?usp=sharing https://docs.google.com/file/d/0B9np...it?usp=sharing
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03-21-2013, 12:21 PM | #2 |
Scooby Newbie
Member#: 83291
Join Date: Mar 2005
Location: NE PA
Vehicle:1998 RSTi IAG Stg4 Extreme S366SXE |
Log WGDC%, target boost, actual boost and compare them to your file. You are likely overshooting on the WGDC%.
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03-21-2013, 12:40 PM | #3 | |
Scooby Newbie
Member#: 180912
Join Date: May 2008
Chapter/Region:
SCIC
Location: SoCal
Vehicle:2004 WRX PSM |
Quote:
So am I supposed to go drop my WGDC table drastically to compensate or do I change my TD tables? More importantly why would this happen? I am not heavily modded and the mods I do have shouldn't be effecting boost this drastically right? A nice UP will increase spool time that's about it as far as I know. |
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03-21-2013, 01:10 PM | #4 |
Scooby Specialist
Member#: 323908
Join Date: Jun 2012
Chapter/Region:
MWSOC
Location: Dayton Ohio
Vehicle:2013 BRZ ltd ISM |
Either your WG tables are wacked out or your TD tables are jacked. If you are stock turbo I would return those tables to stock and see what happens.
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03-21-2013, 01:12 PM | #5 |
Scooby Guru
Member#: 99442
Join Date: Oct 2005
Chapter/Region:
International
Location: Man of Mystery
Vehicle:2006 SGM STI I'm on CORN YO! |
put on a MBC and see if it goes away. if so throw away your stock EBC
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03-21-2013, 01:18 PM | #6 |
Scooby Newbie
Member#: 180912
Join Date: May 2008
Chapter/Region:
SCIC
Location: SoCal
Vehicle:2004 WRX PSM |
All boost related tables (target boost, wgdc, TD, and all compensations) are at stock values and have never been tampered with. I even verified this by comparing to OEM ROM tables.
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03-21-2013, 02:20 PM | #7 |
Scooby Newbie
Member#: 315840
Join Date: Apr 2012
Chapter/Region:
Tri-State
Location: New York
Vehicle:2000 2.5rs |
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03-21-2013, 02:28 PM | #8 | |
Scooby Newbie
Member#: 180912
Join Date: May 2008
Chapter/Region:
SCIC
Location: SoCal
Vehicle:2004 WRX PSM |
Quote:
If I were going for power gains I would grab a prodrive 3 port like I had on my last WRX and just use the maps I have from that car. This is a stock boost setup and I intend to keep it that way for awhile. |
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03-23-2013, 06:46 PM | #9 | |
Scooby Specialist
Member#: 274499
Join Date: Feb 2011
Chapter/Region:
NESIC
Location: RI
Vehicle:1994 5.8T Cobra 755rwhp @ 16psi |
Quote:
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03-24-2013, 07:56 AM | #10 |
Scooby Guru
Member#: 70395
Join Date: Sep 2004
Chapter/Region:
MAIC
Location: Da-boonies,Va
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Are you running the stock DP and stock boost levels? Post your ROM up on Romraider and link it back here.
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03-24-2013, 03:03 PM | #11 | |
Scooby Newbie
Member#: 180912
Join Date: May 2008
Chapter/Region:
SCIC
Location: SoCal
Vehicle:2004 WRX PSM |
Quote:
Indeed I am running the stock DP and boost levels. |
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