The Accessport has nothing to do with it. You need to describe the problem better. FYI- The car is not going to hold the same boost level to redline. It will hit max boost around 3000rpm and hold it to about 4500rpm and then taper down from there to around 10psi by redline. The oil in the intercooler is most likely PVC blowby build up and is normal. It's the reason people run "catch cans". Just because you get a puff of oil from the exhaust does not automatically mean it's the turbo. Could very well be your valve seals or piston rings are going on one of the cylinders. Rebuilding a turbo is not for a novice.

 

Your boost curve will look a little different depending on your tune, and because you have a 2.0L engine, are at a different elevation, etc...

As Donkey says the amount of boost you'll see is a dynamic value depending on load, rpm, etc... This graph is from a WOT 3rd gear pull 2500 - 6500 rpm. The TD04 runs out of breath FAST.

 

Well thanks for the advice I didn't specify but its not tapering it jumps to 20 then drops to 12 and continues this while keeping my foot on the pedal. Oh and I would not be the one rebuilding the turbo because I am a "novice". I will post a video of it later today.

 

Boost oscillation.

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So doing a little more research i have some new ideas of what the possible problem is. I think it is oscillating because of over boost. In 1st, 2nd, and 3rd gear there is no oscillation because the boost never gets over 15psi. But in a low RPM high gear like 4th or 5th gear roll it will start to build boost and shoot all the way up to 20 ta 22 then go down to 13 14 and continue to oscililate untill it hold a continuious 14 15. So making this observation i think that oscillation could be normal because over the over boost issue.

So what could be causing this over boost issue? If i were to adjust the wastegate arm and extend it could this possibly fix the issue of over boosting. Does extending the arm lower the boost and shorting it would increase it???? Again im new to the WRX scene and would love any helpfull information.

 

I have a data log but am not sure how to load it on here ya i probally sound like a DUMB ***. But i would like to see if someone could look at it and see if they see something out of the ordinary with it and help me with the confusing issue. But how to load it on here?

 

I have a data log but am not sure how to load it on here ya i probally sound like a DUMB ***. But i would like to see if someone could look at it and see if they see something out of the ordinary with it and help me with the confusing issue. But how to load it on here?

Upload the log file to Google Docs
Put inside [code*][/code*] tags (without the *)

Google Docs is ideal, as sometimes the code tags don't line up the columns that well...

 

One more question im sure this wont help but ill still ask. I see on COBBs website they have a version of the stage 2 tune for vehicles not reaching target boost, Not this isnt the issue as you probally read but i am new to the Access Port and WRX world should i try it and try to adjust the wastegate arm or leave the tune and try to adjust the arm?

 

Lol thank you here is the Data Log....https://spreadsheets.google.com/ccc...com/ccc?key=0Aq-nsWCNorYPdG93bWtCWEN4MWljVXJ0cThMZm0tNHc&hl=en&authkey=CLDLo68I

 

Sounds like maybe someone did the 3/16th mod to the vac hose restrictor/connector and there is now too much air let off when the BC solenoid opens so it's having problem stabilizing the boost early enough and thus over boosts, then it tries to lower the boost but it lowers too much thus starts to hunt for awhile before managing to stabilize... I would put in a smaller ID connector first before adjusting the wastegate arm... The connector is an in line connector/reducer past the "T" in the vac line off turbo that goes to wastegate and the BC solenoid.

 

How and what do i do lol? There is line that come off the top of the wategate to the BC solenoid, But then there is a T in a line but one of the lines on the T goes to the Boost Gauge.

 

Now becasue i didnt continue the log or keep my foot on the pedal you cant see the oscilating issue. Tomorrow i will put up a new log and show a 4th gear low RPM roll all the way up to show excatly what it is doing.

 

Lol thank you here is the Data Log....https://spreadsheets.google.com/ccc...com/ccc?key=0Aq-nsWCNorYPdG93bWtCWEN4MWljVXJ0cThMZm0tNHc&hl=en&authkey=CLDLo68I

There's no oscillation in the datalog you provided; boost goes up to 17.55 and then you let off the gas.

 

I know tomorrow im going to do another log to show the oscilation issue.

 

Then the boost gauge is hooked in the wrong place and is probably only reading 8 Psi ? A vac line should be coming off the turbo, and is a short hose with a restrictor pill in the middle of it and it goes to the "T" one of those lines off the T goes to the wastegate and the other should be going to the BC solenoid... That one should have an in-line connector/reducer which should be less the 1/8 ID... Having the boost gauge hooked in there could also be the problem, maybe...

http://www.cobbtuning.com/info/?ID=3482 How the Subaru factory boost system works...

 

JESUS ok i did alot of research about this 3/16th mod and ya my lines are all screwed up. Ok there is a line coming if the wastegate but it doesnt go to any T it just gos straight to the Boost solenoid but i just saw some pics so should im guessing i have to go and fix those line and maybe it will fix the problem?

So if anyone has any pictures of what and how the vacuumm lines are supposed to be ran that would be amazingly helpfull as soon as i get off work today i will be trying to re run all the vacumm lines.

 

Your DAM is very low. Add throttle position, FBKC and FLKC to your logs as well.

 

So one more question i noticed that the BCS is a GM 3 port BCS not the stock hints the not stock vaccumm line setup. So my question is i noticed there is no restrictor pill in the turbo vaccumm line should there still be one in there even though it is an aftermarket BCS?

 

This could be a big part of the issue. Does the current map look custom (based on map name), or are there any notes associated with the file that would hint if it's capable of controlling the 3 port?

 

Just checked, if you select the map in AP Manager there might be some comments attached to it.

 

https://spreadsheets0.google.com/spreadsheet/ccc?hl=en&key=tXlZrJ14XtVsqy5ockTJBgA&hl=en#gid=0

I forgot to change what im logging so i only logged the 10 i had before. I looked at my map notes and it doesnt say anything about and aftermarket BCS it says stock turbo, turbo back exhaust, stock intake and 91 octane

Oh and the exhaust is catless.

 

You cannot use anything else but the factory boost control system with Cobb's OTS maps. The GM solenoid requires duty cycles that are half of what the factory solenoid uses. Also the GM solenoid does not require the pill. You need a custom tune to run it.

 

You're likely detonating heavily when you over boost, that's likely the reason your DAM is so low. That map description reads like the OTS Cobb map description. I'd compare the file name to the Cobb OTS name as well. Source yourself an OEM BCS and go from there.

 

Sounds great guys thank you so much for all the help learing allot.

Tonight i agjusted the wastegate arm 2 turns and noticed the boost had a lower spike it only went to 18 19 compared to 20 22. But when it does hold boost it only holds like 13 were as target boost for this tune im guessing is around 15.

 

HAHAHa so i guess technically it could be a combination of the tune and BCS which are possibly causing this issue.