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Old 01-27-2010, 11:38 PM   #1
MiCaHSTi
Scooby Newbie
 
Member#: 175721
Join Date: Mar 2008
Chapter/Region: RMIC
Location: Park City
Vehicle:
06 STI
OBP

Default Need help from RMIC: boost issue

I recently bought a 04 fxt. When looking at the car it had a dp on it. The Kid i was meeting to buy from said he had purchased it like that. I knew i should find another but had been looking for ahwile and made the purchase.
On my way home i got a cel, i assumed it was the dp. I removed it and put my stock 06 sti on. The cel came back i used my AP V1 from the sti to read the code. It was p0011, did some research and removed the filters in the banjo bolts and the problem was solved.
The car also had a mbc ( turboxs ) that i also removed. I accidently removed the pill with it. Ran the car for about a week, boost was steady but low around a solid 7 lbs. I realized no pill found it and installed it only to overboost and fuel cut. I got the correct pill from subaru, had a slightly larger hole.
Now the current issue. wot 1st and second is fine, 75% of throttle everthing is fine all gears. If i go wot 3,4,5 it jerks for a sec then the boost jumps to about 13lbs than falls to about 10 lbs and kinda holds. Im guessing boost spike?
Is there anyway there could still be a map on the ecu from previous tuning im not aware of?
There is a staight pipe from mid pipe on
Thanks everyone for your input
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Old 01-27-2010, 11:41 PM   #2
JON-E25WRX
Scooby Specialist
 
Member#: 225389
Join Date: Sep 2009
Chapter/Region: RMIC
Location: Sandy, UT
Vehicle:
03 wrx, MBP 08V
rotated 35r VOLTEX bugeye

Default

hm... clueless here, but nice fozzy
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Old 01-28-2010, 01:40 AM   #3
skatevolcom06
Scooby Specialist
 
Member#: 199522
Join Date: Jan 2009
Chapter/Region: RMIC
Location: Elko, NV
Vehicle:
2004 Impreza STi
PsM

Default

Well if the previous owner had the downpipe/exhaust on it you would hope he was running a correct map for those items. It could be that it is on a tune and the boost tables aren't right due to it previously running a MBC. I have no idea how to tune nor what goes along with it but flashing it back to a stock map wouldn't hurt to try.

Also nice fxt!
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Old 01-28-2010, 09:51 AM   #4
06HAWKMAN
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Member#: 166626
Join Date: Dec 2007
Chapter/Region: RMIC
Location: salt lake city utah
Vehicle:
2006 wrx ewg vf39'd
obp

Default

When medamullett gets back in town I am sure he would be down to log it for you and see what is going on. Did you replace the mbc with an ebcs? If so those all need to be tuned for as each handles the boost and duty cycles differently. what all did the car have done to it and what all did you do to it?
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Old 01-28-2010, 12:05 PM   #5
bhhamblin
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Moderator
 
Member#: 99397
Join Date: Oct 2005
Chapter/Region: RMIC
Location: Clinton, UT
Vehicle:
13 STI, 83 DR30
93 R32 GTS-T, 93 R32 GTR

Default

stock cars usually taper.

Did you buy that car from somebody in the Clearfield/ Roy area?
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Old 01-28-2010, 06:33 PM   #6
MiCaHSTi
Scooby Newbie
 
Member#: 175721
Join Date: Mar 2008
Chapter/Region: RMIC
Location: Park City
Vehicle:
06 STI
OBP

Default

I hooked it back to the stock ebc. And yes i bought it in the Clearfield/ Roy area, By any chance do you know what setup they had going on?
And thanks for the comments
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Old 01-28-2010, 07:07 PM   #7
oxox55
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Member#: 217423
Join Date: Jul 2009
Chapter/Region: RMIC
Location: utah
Vehicle:
02 wrx E85
psm

Default

This is my old fxt, although I think it has changed hands a few times since I sold it. When I sold it it was running perfect. Who knows what has been done since then. p.m. me if you have any questions I might be able to answer
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Old 01-28-2010, 08:08 PM   #8
907Bum
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Member#: 183634
Join Date: Jul 2008
Chapter/Region: RMIC
Location: At the "B"
Vehicle:
02 wrx/ 92 ss
Booze fueled :)

Default

It's hard to diagnose the car without any logs, sounds like the wg duty tables may not be set up correctly, but again without logging it's hard to say whats going on.

PM me if you need some help logging/diagnosing.
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Old 01-28-2010, 09:09 PM   #9
Indifferent
Scooby Newbie
 
Member#: 186250
Join Date: Aug 2008
Chapter/Region: RMIC
Location: downtown SLC
Vehicle:
2004 FXT
Silver

Default

i wish my fozzy was black, and definitely get a log soon.
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