CEL

IBratmanI

IBratmanI

Subaru Ambassador- AdidaSubarus
So I decided I'd tackle my turbo swap today. I swapped in a VF39, and tuned it with my Accessport. After driving it a bit, I did a long pull and found that my boost went quite high then everything cut out and my CEL came on. I checked the code and it was PO244 which is something about wastegate performance, which would explain why I boosted too high. Any ideas on what I need to do to fix it??

 
Same thing happened to me at work. I had hoses backwards, or not hooked up, cant remember exactly.

It pulled wicked good then at 4k something shut the thing down abruptly. Scared to poop out of me.

 
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Hmmmm, I put everything back the way it was in the stock turbo. I really have no idea. Gabe is gonna take a look at it on Tuesday, so maybe he will find something that I didn't.

 
which we will have the toxic gold diagram to go by
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So just for the hell of it, I changed out the vacuum hoses and restrictor pills from the stock turbo to the VF, and it helped, but it still over boosts. But I think that may be the issue though. But not completely sure.

 
One call to cobb and a question on which boost lines per their mapping could end this problem
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Each boost line has a different pill inside of the "T" boost lines. You can't see it but it's there. Different sizes make different boost.

 
I did call Cobb today and they really only have a solution for the 07 WRX/STi and they said that I would have to get them from Subaru. But I actually ordered the T and the restrictor pill today from Subaru for a 2004 STi. So it matches exactly what it should be. So we will see after that. Thanks!!

 
So I put the 04 STi one on today, and it didn't change a thing. Someone on another forum had a similar issue and said he drilled out the pill a little at a time until the issue went away, so I tried that and it got a little better, but I ran out of light, so I still have to see if it will work.

 
So I called Cobb again today, and they tried to tell me it's because I have a catless exhaust system. They said the way they would fix it is to put the stock TD04 vacuum line and restrictor pill in, but I have already tried that. The other thing they said is to try to drill out the pill, which I have tried as well, and it helped, but now I am losing performance, it doesn't pull as hard at lower revs, and it will hold strong at 12ish up until 5k and then start to creep up over 20.

 
That's what Bren said to do. I might end up having him tune it. I just gotta figure out a few details with him first.

 
So with the advice from a tuner, I just tied off the hose that goes to the boost solenoid, and ran a straight hose from the nipple on the end of the turbo to the wastegate can. I saw absolutely no difference at all. So he say this means I need to port my wastegate!! I just don't understand why mine is doing this and it works fine on others?!?! I know Gabe is running a similar set up and his works fine, but he has a 2004 STi ECU, would that make all the difference??

 
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