gtb standard boost

[ajb86n]

Atmospheric blow off valve its a stage 1 turbosmart if that helps

[Rosssub]

Try blocking the BOV off completely then go for a drive to see if it makes any difference, might be blowing open when it shouldn't.

[ajb86n]

I think it is mate didnt block it off but was under the hood gave it some revs blowoff valve opened as normal but wen it closed i notched it started opening slighty again before reving again is that normal if not new blow off valve is it??

[slystiguy]

With most A/M valves you can adjust them. It's also possible to clean them with most good brands

[ajb86n]

Ok so pulled it off i dont think its adjustable so put it back on now i have lost boost in 1st turbo 2nd goes hard wen i get to 5 grand but thats when i get to five grand any ideas

[megamac]

 ajb86n said:

Ok so pulled it off i dont think its adjustable so put it back on now i have lost boost in 1st turbo 2nd goes hard wen i get to 5 grand but thats when i get to five grand any ideas

I think you're expecting too much from the primary turbo tbh lol

[Rosssub]

 Rosssub']Try blocking the BOV off completely then go for a drive to see if it makes any difference, might be blowing open when it shouldn't.

[quote name='ajb86n said:

Ok so pulled it off i dont think its adjustable so put it back on now i have lost boost in 1st turbo 2nd goes hard wen i get to 5 grand but thats when i get to five grand any ideas

You need to remove the BOV and block the hose completely, also plug the BOV vacuum hose. Then go for a drive and see if boost levels change. If boost levels change then the BOV is leaking under boost.

[ajb86n]

Sweet rossub your the man mate ill give it ago tomorrow bit busy tonite will keep u updates mate appreciate your input qnd help bloke also would this affect a hunting idle its getting worse by the day i was leaning towards coils but im getting told by a few that my blowoff valve will be the issue aswell

[Rosssub]

Yip the hunting idle could be the BOV too, or a sticky idle control valve. Make sure there are no vac leaks anywhere, hoses venting etc.

[ajb86n]

Sweet mate ill check icv in the morning and will suss out blow off valve after work will keep u updated mate thanks again for your knowledge

[ajb86n]

So ive checked the vac lines no leaks i could find ive got a brand new hks super seq blow off valve just put that on and it feels alot better but still wont boost on 1st 2nd however is still going pretty hard any ideas on where to go next

[Marky]

No fault codes, nothing seems out of place, chuck a bleed valve on it and see what happens

The AFM's quite often fck out without throwing an error code and will result in a hunting idle more often than not too

[ajb86n]

Ive got code 23 air flow sensor??would that affect boost and hunting idle

[Marky]

Yes it will affect pretty much everything, and drive it nicely because it's in "limp home" mode at the moment

That is the root cause of your problems, go get a new one, Subaru sell them for about $170

The air flow meter is the main load sensing device for the engine, without it it is basically flying blind and thrashing it with it broken is just begging to nuke it

[ajb86n]

Any info on how to get 1 from subaru dont think theres subaru specilist in dunedin

[ajb86n]

Also just checked codes again and theres no cel now wtf

[Marky]

If it's thrown the code once, it is at least pointing you in the right direction

[Marky]

https://www.google.co.nz/?gws_rd=ssl#q=subaru+dealer+dunedin

[ajb86n]

Cheers marky havent had a chance to have a look works full on at the moment so i pulled out maf sensor gave that a clean with maf sensor cleaner put back in reset ecu code has gone but is spitting 45 now so on to the next thing

Also ive asked this before but my boost on both turbos is still only putting 7psi out gtb standard boost should be higher im absplutly lost at the moment really wana figure this out as cant afford mechanics bill at the moment any help would be great am gona do boost leak test tomorrow but any other inputs would be solid

Cheers all

[Marky]

http://www.uklegacy.com/forums/index.php/topic/110275-boost-problems-code-45/

Don't worry about the boost it's running until you fix the problems it has, the car is dropping boost on purpose because it isn't happy with how things are, it's like a safeguard

[ajb86n]

So new maf sensor 1st ya reakn will call around tomorrow if u reakon i should do that

[ajb86n]

Hey guys

got a second hand maf sensor today installed it and it idles fine now but still boosts 7 on both should I try a new boost solenoid??

[Rosssub]

Did you try the boost leak test?

Try giving the boost solenoid a good clean out, might be blocked giving WGSP. Put the car into test mode so all solenoids are pulsing again, then pump some carby cleaner through the boost solenoid as it pulses. Can also bleed the fluid into a jar to see what comes out.

The boost solenoid is up inside the passengers guard:

[Marky]

Also reset the ECU, just unplug the battery for a couple mins. Might just need to be cleared

[ajb86n]

Yep unplugged battery for half hour before I drove it definatly feels more responsive but yea only 7 psi I'll do a boost leak test tomorrow morning also clean boost solinoid should I be looking at the waste gate aswell