Throwing CEL's after going cat-less
04-29-2009 | 11:28 AM
#1
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Posts: 110
From: Sacramento, CA
Car Info: '06 SGM WRX / 18G (300/291) RIP, '05 TB Evo VIII
Throwing CEL's after going cat-less
I recently just made the switch from high-flow, to catless downpipe. I had been tuned with the cat so I turned down the MBC a little to try to compensate. I was peaking at 19.5psi before. Since the install, I have thrown a CEL the last 3 nights. Code is P2044, Turbo Boost Wastegate Solenoid Range/Performance. Last night I was peaking at 18.1 yet still threw a code. My boost gauge isn't installed so I was using my accessport to read boost. Temps were in the 40's so that may have had something to do with the spike. I'm not going to get re-tuned for this since I have other mods coming up that would require me to do so. I'm going to turn down the MBC even more but is there something else I should do? Hickups at 6k are scary as sheet. Any help would be appreciated. Thanks.
Mods:
18G, perrin tmic & inlet hose, spt intake, titek d/p, greddy evo2, hallman mbc, cobb ap v1
Mods:
18G, perrin tmic & inlet hose, spt intake, titek d/p, greddy evo2, hallman mbc, cobb ap v1
04-29-2009 | 07:50 PM
#3
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From: Delhi, CA
Car Info: 2006 Subaru Impreza WRX TR
I'm guessing this is happening in 4th and 5th gears?
05-01-2009 | 03:34 PM
#4
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From: Sacramento, CA
Car Info: '06 SGM WRX / 18G (300/291) RIP, '05 TB Evo VIII
Happened in 3rd gear right around 6k, I'd be going way to fast to find out in 4th and 5th. Turned mbc down a little more and that seems to work for now. Don't really want to pull the mbc and run wastegate boost since I probably won't get tuned for a while. Thanks for the suggestions guys.
05-03-2009 | 04:59 PM
#7
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From: NW-Sacramento
Car Info: 07 STi Limited #359 UGM
U really need a retune asap before u destroy ur motor. Hit up ed at EQ tuning or Paul at dbtune, they will fix it for u in a jiffy. Cost a pretty penny, but better than new motor or other parts.
05-03-2009 | 05:01 PM
#8
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From: on the way to lake tahoe to shread! turbo beast
Car Info: 2016 WRX, 2014 lifter forester XT, 2005 JDM207 WGN
you were tuned with a cat the first time, you are flowing more air and going to running different without a cat on your car. You should really thing about a retune.
05-04-2009 | 01:01 PM
#9
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Joined: Mar 2009
Posts: 110
From: Sacramento, CA
Car Info: '06 SGM WRX / 18G (300/291) RIP, '05 TB Evo VIII
Ed tuned the car originally. I understand that I'm going to boost higher without the cat and that if I turn the mbc down too far I might be hitting different load cells on my map. I just figured since I was tuned conservatively prior with a high flow cat, which titek claims only a 3-5hp loss, I should be ok driving around for a while. I obviously don't want a blown motor but I will be getting tgv deletes and grimmspeed pnp'd exhaust mani soon which would require a whole new tune again.
05-04-2009 | 11:47 PM
#11
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From: Delhi, CA
Car Info: 2006 Subaru Impreza WRX TR
Ed tuned the car originally. I understand that I'm going to boost higher without the cat and that if I turn the mbc down too far I might be hitting different load cells on my map. I just figured since I was tuned conservatively prior with a high flow cat, which titek claims only a 3-5hp loss, I should be ok driving around for a while. I obviously don't want a blown motor but I will be getting tgv deletes and grimmspeed pnp'd exhaust mani soon which would require a whole new tune again.
I've got TGV deletes for ya too!
05-22-2009 | 07:16 AM
#14
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Joined: May 2009
Posts: 11
From: Milford, MA
Car Info: 2005 Subaru STi
Just like what everyone else said, dont go tooling around. HOWEVER, if you plan on doing these mods soon dont waste money in a tune right now. Better yet, since you're coming back, ask your tuner for a limp map until you get the parts.
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