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Old 06-09-2007, 12:11 AM   #101
STIBungy
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Have you changed anything prior to having this problem? Like add an intake?
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Old 06-11-2007, 10:02 AM   #102
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Default Should have done this sooner

04 STi 65K

Both filters had dropped but came out easily with small needle nose pliers gripping on outside of filter.

The idle is smoother, especially when the engine is cold. The engine is also smoother while driving. Off idle Throttle response is smoother and makes the car easier to drive.

I think this should be a recall. The only reason I can think of is that it is un-likely that the filter would drop down far enough to damage. I did not think the idle was rough UNTIL I did the mod.

Thanks Peaty
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Old 06-11-2007, 05:39 PM   #103
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I never had any problems with my cars idol, till I put a K&N short ram in. My car's idol was so unpredictable and it was jumping like kids on a trampoline. I took it out, but the shoddy filter had already destroyed my mass air flow sensor. ($275 for a new one) I installed a SPT intake and heat shield right after that and haven't had any problems.

PS, if anyone wants a K&N short ram, I'll sell you mine... Cheep! lol
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Old 06-14-2007, 04:05 PM   #104
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I have not modified anything on the car. I bought her used last summer with 38K on her and no idle problem and it is poping up now.

I replaced the air filter, fuel filter, tranny fluid (although i need to do scottys cocktail), rear dif fluid when i first got her. I also had an issue with the car slow turning over and seeming not to charge fully when under full load so I replaced the alternator with a bosch one and its running much better with that and getting better gas mileage too.

I recently did a fuel system clean out at the dealer which seemed to help a tiny bit with the idle problem.

At this point I am wondering if the MAF is having issues or if its as simple as changing the spark plugs out.

any thoughts?

Quote:
Originally Posted by STIBungy View Post
Have you changed anything prior to having this problem? Like add an intake?
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Old 06-16-2007, 09:24 PM   #105
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Just looked at mine today, neither had a filter and my vin is 501xxx, go figure. I'm sure the dealer hasn't touched them.
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Old 09-24-2007, 12:15 AM   #106
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OK, I just bought a 2005 Outback XT. Production date of 8/04. I have noticed a rough idle at times, and not smooth through the RPM band, esp. around 2k-3k. I do not see any LGT or OBXT's listed in the TSB. Is this issue common to these vehicles? I'd love to think that I could do this "repair" and solve my idle issue....Even better, have Subaru do it....

Last edited by fastsedan; 09-24-2007 at 12:39 AM.
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Old 12-03-2007, 02:15 PM   #107
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There is a new TSB regarding this type filter. The OCT 2007 TSB indicates that the filter can reduce oil flow to the turbo and result in turbo failure, so you need to remove all three of the filters, not just the 2 for the AVCS valve. Please check out the OCT 2007 service bulletin here, the PDF is towards the bottom of the page.

http://store.forcedperformance.net/m...Info_SubaruOil

Boost On!
Robert Young
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Old 12-03-2007, 03:14 PM   #108
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Quote:
Originally Posted by FPTurbo View Post
There is a new TSB regarding this type filter. The OCT 2007 TSB indicates that the filter can reduce oil flow to the turbo and result in turbo failure, so you need to remove all three of the filters, not just the 2 for the AVCS valve. Please check out the OCT 2007 service bulletin here, the PDF is towards the bottom of the page.

http://store.forcedperformance.net/m...Info_SubaruOil

Boost On!
Robert Young
Thank you, Thank you, and Thank you again!!!!
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Old 12-03-2007, 06:01 PM   #109
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Quote:
Originally Posted by FPTurbo View Post
There is a new TSB regarding this type filter. The OCT 2007 TSB indicates that the filter can reduce oil flow to the turbo and result in turbo failure, so you need to remove all three of the filters, not just the 2 for the AVCS valve. Please check out the OCT 2007 service bulletin here, the PDF is towards the bottom of the page.

http://store.forcedperformance.net/m...Info_SubaruOil

Boost On!
Robert Young
Thanks for the link! However, that doesn't say that it should be removed, it says it should be checked.

WTF does that mean? I have to check that damn thing every time I change my oil? Then reinstall it "correctly" so that it doesn't block the flow of oil? I'd be more inclined to remove it as you suggest...
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Old 12-03-2007, 07:33 PM   #110
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Quote:
Originally Posted by FPTurbo View Post
There is a new TSB regarding this type filter. The OCT 2007 TSB indicates that the filter can reduce oil flow to the turbo and result in turbo failure, so you need to remove all three of the filters, not just the 2 for the AVCS valve. Please check out the OCT 2007 service bulletin here, the PDF is towards the bottom of the page.

http://store.forcedperformance.net/m...Info_SubaruOil

Boost On!
Robert Young
Good looks on that!
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Old 12-03-2007, 08:40 PM   #111
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Default Turbo Oil Filter TSB OCT 2007

The Subaru Bulletin of OCT 2007 might now say directly to remove it, but the factory techs are being told to remove them and not risk leaving them in place.

I think this may be less of a problem for guys who have owned their cars since mile "1" and bough $15/qt oil every 2500 miles, but lots of guys are second owners and there is a very good chance that grunge has collected in the turbo oil filter, and Factory Service techs have only been advised to even look at this filter for the last 2 months.

Some people who have pulled the 2 AVCS filters may not have pulled this turbo filter or even know about it since the TSB is only dated OCT 2007.

Of course BB turbos will have fewer problems on a restricted oil supply, but not everyone uses BB turbos.

Please tell your friends to check (REMOVE) their turbo oil filter on all 2004 and later 2.5 engines.

BOOST ON!

Robert Young
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Old 12-03-2007, 11:33 PM   #112
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Thanks for bumping this thread Robert!! I read this thread awhile ago before I even had my 04 STi, but completely forgot about it.

So, I went today and pulled the 2 filters out of my freshly built motor. Very simple. One of my filters had dropped and one was still in the bolt. Both of them were clean. I could certainly tell a difference in the idle. I'll be pulling the filter out by the turbo next oil change!
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Old 12-04-2007, 05:19 PM   #113
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Yeah, lots of guys did the 2 AVCS screens but didnt know about the turbo screen. Hopefully more guys will see this and pull the turbo oil screen also - or at least keep it really clean with proper maint.

Boost on!
Robert
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Old 12-04-2007, 06:33 PM   #114
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We just got our hands on this filter element for the first time, it is a lot more restrictive than we imagined. Without a doubt the best course is to remove it. Supplying your expensive turbocharger with full flow oil is critical. We'll be adding some pictures to the site soon of the filter we pulled from our STi today.

Boost On!
Robert Young
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Old 12-04-2007, 06:56 PM   #115
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Robert, so I'm assuming you have to drain the oil to pull the turbo filter out? I was hoping I could get away without draining the oil(cold motor of course), but I dont see that working very well without making a huge mess.
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Old 12-04-2007, 07:53 PM   #116
rjpsti04
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there should not be much mess and no need to drain the oil i have allready removed the avcs screens but did know about the turbo screen. there is still a bit of idle wonder but im not worried about it
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Old 12-04-2007, 08:39 PM   #117
Engmus
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I just did the two AVCS banjo filters and finished those.

Im having trouble locating the third, any got a picture? I think I see the line but im not sure where the filter is, is it turbo side or is it the banjo bolt to the rear of the engine?
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Old 12-04-2007, 08:59 PM   #118
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Quote:
Originally Posted by Engmus View Post
I just did the two AVCS banjo filters and finished those.

Im having trouble locating the third, any got a picture? I think I see the line but im not sure where the filter is, is it turbo side or is it the banjo bolt to the rear of the engine?
The link Robert provided has some diagrams that may help.

Quote:
Originally Posted by FPTurbo View Post
There is a new TSB regarding this type filter. The OCT 2007 TSB indicates that the filter can reduce oil flow to the turbo and result in turbo failure, so you need to remove all three of the filters, not just the 2 for the AVCS valve. Please check out the OCT 2007 service bulletin here, the PDF is towards the bottom of the page.

http://store.forcedperformance.net/m...Info_SubaruOil

Boost On!
Robert Young
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Old 12-04-2007, 09:07 PM   #119
Engmus
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I see that diagram and read that page, call me a dumbass but I can't make heads or tails of it when looking at the actual application.
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Old 12-04-2007, 10:08 PM   #120
Engmus
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Well I couldnt figure out that last one so 2\3 out of three isn't bad.

I'll do the third one next oil change. Hopefully by then this will be a bit more clear.
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Old 12-04-2007, 11:11 PM   #121
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Quote:
Originally Posted by Engmus View Post
Well I couldnt figure out that last one so 2\3 out of three isn't bad.

I'll do the third one next oil change. Hopefully by then this will be a bit more clear.
The 3rd filter is located in the banjo bolt on the rear of the passenger side head. It's "A" on figure 2 from the posted diagram. On the diagram it says DO NOT remove it(filter), but just disregard that.
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Old 12-04-2007, 11:33 PM   #122
Engmus
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That banjo, looks IMPOSSIBLE to get too.
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Old 12-05-2007, 12:03 AM   #123
crazyGC8
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Definately not as easy as the other 2, huh....
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Old 12-05-2007, 12:06 AM   #124
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No, it looks like you have to unbolt the up-pipe support to get at it.

Im gonna give it a go in a minute.
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Old 12-05-2007, 12:46 AM   #125
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Stuck bolt, but i'll get it
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