vous pouvez voir la meme chose en francais au/you can see this in french at http://www.clubsubaru3r.com/viewtopic.php?f=25&t=3761&p=33351#p33351
Basically the problem is when it's cold outside like 0f and under when you start the car it run fine and even if you let it idle for like 5 min it's fine, but when you hit the gaz 1 time the choke stop and now the car will almost die down to 500 rpm then back up to 1500 down to 500...every time you stop at a corner or you put on neutral then when the car is hot (15 min highway) the problem is gone.(how to be a good customer video ETCG!
[ame=http://www.youtube.com/watch?v=wWUqr-mKCx0]How To Be a Good Customer -ETCG1 - YouTube[/ame]
The problem i found (using eric video on vaccum leak using carb cleaner
[ame=http://www.youtube.com/watch?v=9CPqbaSgcok]How To Find A Vacuum Leak - EricTheCarGuy - YouTube[/ame]
is that between the plastic intake (pic below) and the metal intake when the metal is cold it contracted and the gasket didn't fill the gap it's a manufacture error on the gasket and it's only on late 2007 and early 2008 wrx and legagy gt model.
i did this a week ago on my wrx 2008, the rough idle is completetly gone and i can actually reach my target boost now (14.5)
took me like 3-4 hour with a couple of beer.you will NEED dental pick and a small mirror something like that
here what i did with picture :popcorn:
http://s12.postimage.org/vicly0865/blue_orange.jpg
(this picture isn't mine) yellow arrow and circle are bolt or clam to remove,the orange circle is an air pump to be remove too (2 bolts, 1 clam), the orange arrow is the fuel line bracket that will need to be bent up, the blue arrow are optional but it help move the intake a bit
start by removing the intercooler, the air intake and the tube between the air box/motor and the small black coolant tank (unhook the three tube on top and remove the bolt holding the tank, lift the tank off the plastic nipple and drain the liquid inside into a CLEAN bottle you will reuse that).
http://s12.postimage.org/ado5j39st/b_braket.jpg
behind the intake when the intercoller used to be you will need to remove 3 bolts, if you look at the engine from the front start on your left (the last bolt is hidden behind the bov tube), they hold a bracket for electric wire,now you will need to ply this off the intake on the picture you can see how the bracket look.
ok so now we need to access the plastic intake gasket
http://s12.postimage.org/p5xgo653x/bmanifold.jpg
there's 6 bolts holding down the intake THESE ARE TO BE TORQUED BACK AT 6 when you reinstall
when your done you should be able to lift the intake... well maybe not lift as much as gap it
http://s12.postimage.org/ygemotm59/bratchetspace.jpg
http://s12.postimage.org/n6c9j0lel/bgap.jpg
http://s12.postimage.org/6iuerdmcd/bspace_2.jpg
you can use something to hold the intake up like this IF YOU DO, PLEASE ONLY DO THAT BETWEEN THE TWO INTAKE, IF YOU SCRATCH THE HEAD WHERE THE GASKET SEAL YOU'LL CRY
this is what we're looking for
http://s12.postimage.org/obax24x99/bgasket_1.jpg
http://s12.postimage.org/4j8r2ulp9/bgasket_2.jpg
the one on the left is the old gasket it's a lot harder material and it's about 1/3 the height of the new one. Try not to drop anything inside the intake, take you time and this is where if you don't have dental pick you will lose your temper trying to get the old one out.
The two on the passager side are kinda easy to do , make sure when you install the new one that they are completely seated, it's not from the same car but it's like this (yours are round not oval)
http://s20.postimage.org/h7y9gv7e5/ez3020and20ez30r20intakes5.jpg
now for the fun part, the driver side... basically the problem is that you have about the height of the gasket to work with. if you try to lift the intake you'll soon discover that the fuel line past over it and 1/4 over it to be precise
I used a long screwdriver and kinda jam it in. you can see it on the left
http://s12.postimage.org/6iuerdmcd/bspace_2.jpg
what i did on that side it (and do this slowly) is remove the old one and 1 by 1 you simply put the gasket on the bottom piece (thumber) and slowly lower the intake on it, now wiggle the intake with very little pressure on it and the gasket will seat in.
CONFIRM THAT EVERY GASKET IS COMPLETELY SEATED WITH A MIRROR DON'T SKIP THIS PART YOU CAN HAVE TWISTED THE GASKET WHEN YOU INSTALL IT
Torque back the intake at 6, reinstall everything, fill back the coolant tank with the coolant.
start the car and check for leak, you will see steam from the antifreeze that drip on the motor but it normal and your done.
(sr if there's a couple of fault, i usually speak french lol)
