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Old 09-03-2012, 12:57 PM   #1
conklin_02
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Default Stage 2 wrx only 9 psi!

Hey guys. Well, i am in need of help because my 02 wrx is only hitting roughly 10psi. I had new plugs put in my car (NGK one step colder) and a new timing belt (full kit on rallysportdirect.com) about 10,000 miles ago. I bought an accessport at WBM along with a Jna exhaust, and a v2 invidia dp. I installed all the parts, put new gasklets from my header back (along with a catless up-pipe) about a thousand miles ago. I have been driving it conservatively because i could not reach the boost target. I brought it to a local shop (i know the owner well) and they tried different things to fix it. I smoked tested my intake, and no leaks. No pre-turbo leaks, tried cleaning out MAF sensor and BCS. still nothing. Stayed at 10 psi. My turbo doesnt leak oil and there is no white smoke. I had a problem with my car misfiring in all cylinders. Everytime i brought it in, it didnt misfire. On my accessport it said that all the cylinders were misfiring. something is definitely not right, and i have not driven my car in a few weeks. a few days ago i data logged this and noticed the DAM was below 16. I did have a massive leak out of my MAF sensor, i fixed it and it stoped misfiring with a cel. However, whenever i rev match or press the gas pedal down (harder than normal), sometimes it pops (not in the exhaust but in the front car) like its misfiring. I need help because i have no idea whats wrong and i do not want to drive an hour and a half to go to EFI logics. Thanks! and here are some various logs....

https://docs.google.com/spreadsheet/...hUEdXVlE#gid=0

https://docs.google.com/spreadsheet/...wV0tmRUE#gid=0

https://docs.google.com/spreadsheet/...WSGtyNVE#gid=0

https://docs.google.com/spreadsheet/...NTmU3VlE#gid=0
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Old 09-03-2012, 02:28 PM   #2
jebjkey
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You need to make the logs public if you want anyone to look at them.
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Old 09-03-2012, 02:30 PM   #3
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Check your boost control lines for proper installation, no cracks, good connections, etc.
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Old 09-03-2012, 02:34 PM   #4
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Make sure you have the oem vacuum line restrictor still installed. This will keep you from hitting target boost if not installed or hooked up properly
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Old 09-03-2012, 02:38 PM   #5
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I had the same problem and only boosted 12 psi and it was my internal wastegate that wouldnt hold more boost. So maybe that could be your problem too.
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Old 09-03-2012, 07:50 PM   #6
Black94Snake
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why doesnt anyone ever fully fill out there profile?

You need to change the permissions on your files. We currently cant see them. Also, I would like to know where you live. I am about an hour and a half from EFI Logics too. If you are local to me, I would love to help you.
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Old 09-03-2012, 08:57 PM   #7
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Leak somewhere! Intake or something not hooked up right!
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Old 09-04-2012, 10:27 AM   #8
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You'll need to set the permissions on the logs to public so they can be viewed.

Bill
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Old 09-04-2012, 02:47 PM   #9
conklin_02
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sorry. just got back in the flow of school and working so i didnt get a chance until now to make the docs public. and there is no leak. i smoked tested it twice. first time i found the massive MAF leak and the second time nothing.
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Old 09-04-2012, 05:55 PM   #10
Black94Snake
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Reset your ECU, then drive the car like a normal human being. Let your DAM make its way back up to 16. Then, and only then, do a proper WOT datalog as shown in Cobb Tunings video on YouTube. Search for AskCobb.

Post back with your results. Two major thugs I see that could be A problem. Bad MAF, or bad front O2.

Or you just have a retardedly large boost leak and you are just ignoring the fact that it is a HUGE possibility.
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Old 09-05-2012, 09:25 AM   #11
Cobb Tuning
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Quote:
Originally Posted by conklin_02 View Post
Hey guys. Well, i am in need of help because my 02 wrx is only hitting roughly 10psi. I had new plugs put in my car (NGK one step colder) and a new timing belt (full kit on rallysportdirect.com) about 10,000 miles ago. I bought an accessport at WBM along with a Jna exhaust, and a v2 invidia dp. I installed all the parts, put new gasklets from my header back (along with a catless up-pipe) about a thousand miles ago. I have been driving it conservatively because i could not reach the boost target. I brought it to a local shop (i know the owner well) and they tried different things to fix it. I smoked tested my intake, and no leaks. No pre-turbo leaks, tried cleaning out MAF sensor and BCS. still nothing. Stayed at 10 psi. My turbo doesnt leak oil and there is no white smoke. I had a problem with my car misfiring in all cylinders. Everytime i brought it in, it didnt misfire. On my accessport it said that all the cylinders were misfiring. something is definitely not right, and i have not driven my car in a few weeks. a few days ago i data logged this and noticed the DAM was below 16. I did have a massive leak out of my MAF sensor, i fixed it and it stoped misfiring with a cel. However, whenever i rev match or press the gas pedal down (harder than normal), sometimes it pops (not in the exhaust but in the front car) like its misfiring. I need help because i have no idea whats wrong and i do not want to drive an hour and a half to go to EFI logics. Thanks! and here are some various logs....

https://docs.google.com/spreadsheet/...hUEdXVlE#gid=0

https://docs.google.com/spreadsheet/...wV0tmRUE#gid=0

https://docs.google.com/spreadsheet/...WSGtyNVE#gid=0

https://docs.google.com/spreadsheet/...NTmU3VlE#gid=0
Your runs are a bit erratic. You really want to get a 3rd gear wide open throttle (WOT) run from around 2000 RPM on up. That will give you an extended run that you can look at. But, I wouldn't bother with that right now - the boost issue is the least of your problems. Your logs show the "C" range of A/F Learning 1 is "off the grid" bumping up against the max allowed (I'm surprised you have seen the "system too lean" CEL).

Can you give more details about the car? Can you list all your mods? Are you running the stock intake and injectors? What map are you running?

Bill
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Old 09-05-2012, 09:55 AM   #12
conklin_02
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I have a spt intake, 3 inch Catless turboback, new one step colder Ngk plugs, light weight flywheel, and obviously an accessport. Stock injectors. I will post better logs today. I will watch the Cobb video. These were over a few weeks, and different days. Other than this, I dont go into boost. Again, I will post better logs. It seems to run a little rougher in the rain for some reason. I will double check for a boost leak. The only thing I can think of is that its something electrical, my internal wastegate isn't working properly, my BCS is gummed up or **** the bed. Or a sensor of some sort. My car has 106*** miles, it's an 2002, and all maintenance is up to date.
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Old 09-05-2012, 09:56 AM   #13
conklin_02
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Oh and I am running the stage 2 v310. Also, of you guys can tell me what data to log that would be great.

Last edited by conklin_02; 09-05-2012 at 10:47 AM.
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Old 09-05-2012, 10:10 AM   #14
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Originally Posted by conklin_02 View Post
I have a spt intake, 3 inch Catless turboback, new one step colder Ngk plugs, light weight flywheel, and obviously an accessport. Stock injectors. I will post better logs today. I will watch the Cobb video. These were over a few weeks, and different days. Other than this, I dont go into boost. Again, I will post better logs. It seems to run a little rougher in the rain for some reason. I will double check for a boost leak. The only thing I can think of is that its something electrical, my internal wastegate isn't working properly, my BCS is gummed up or **** the bed. Or a sensor of some sort. My car has 106*** miles, it's an 2002, and all maintenance is up to date.
You've got a lot of problems going on here - low boost, extreme fuel trims, misfires. Let's try to take these one by one:

1. extreme fuel trims - You are using an unsupported intake with this map. Only the stock and Cobb SF intake are compatible with this map. Using an unsupported intake can potentially cause load errors, which can result in fueling issues (as well as the incorrect ignition timing). Although the SPT intake is a Subaru part, we've found that Subaru didn't do a very good job in designing it to work with the factory MAF calibration and generally needs a custom tune. I would put the stock or Cobb SF intake on to rule this out (reset the ECU via the troubleshooting menu on the AccessPORT is you do so). Other possibilities when it comes to extreme fuel trims include post-MAF intake tract leaks, bad MAF, bad front o2 or other fueling-related mechanical issue.

2. low boost - I wouldn't bother with this until you get the above fixed. You don't want to be doing WOT runs when there is an obvious fueling issue. You can cause engine damage this way.

3. misfires - This could be solely due to your lightweight flywheel, which can cause false misfires.

First thing I would do is get a pressure or smoke test of the intake tract done and fix any leaks. If you find any, reset the ECU (as described above), and drive around on about a tank of gas and see where your A/F Learning 1 A,B,C,D end up.

Bill
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Old 09-05-2012, 10:08 PM   #15
conklin_02
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No leaks, swapped intakes and I'm going to run a tank or gas. Should each afr a,b,c and d, be all the same? Or what's the deal with each of them?
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Old 09-05-2012, 10:45 PM   #16
Black94Snake
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reset your ECM
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Old 09-05-2012, 10:54 PM   #17
conklin_02
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I did.
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Old 09-06-2012, 07:59 AM   #18
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Quote:
Originally Posted by conklin_02 View Post
No leaks, swapped intakes and I'm going to run a tank or gas. Should each afr a,b,c and d, be all the same? Or what's the deal with each of them?
After your ECU reset, drive around through about a tank of gas without reflashing any maps or resetting the ECU. That should give it enough time to populate accurately. Take a peak at A/F Learning 1 A,B,C,D every once in awhile and at the end of this period. Every range should generally be within about +/- 5%. If you are well outside of this for ANY of the ranges, then it indicates a potential fueling issue.

Bill
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Old 09-06-2012, 09:59 AM   #19
conklin_02
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Ok. A has been reading .3%, B has been around 7%, C is reading 14.5%, and D is reading 0%. So I am guessing something is wrong. Things seem to be running a little smoother. Do you think it might be a bad injector? Maybe it's clogged up or just crapped out?
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Old 09-06-2012, 10:18 AM   #20
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Quote:
Originally Posted by conklin_02 View Post
Ok. A has been reading .3%, B has been around 7%, C is reading 14.5%, and D is reading 0%. So I am guessing something is wrong. Things seem to be running a little smoother. Do you think it might be a bad injector? Maybe it's clogged up or just crapped out?
C is very high. An injector issue would likely cause very noticeable idle and driveability issues. The most common suspects for extreme A/F Learning include:
1. post-MAF intake tract leaks
2. bad MAF
3. bad front o2

Of course, anything that impacts fueling can also be the culprit, but the above is the top 3 that is most common on these cars.

Bill
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Old 09-06-2012, 10:33 AM   #21
conklin_02
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Well at idle, the Rpms increase very slightly and only for a quarter of a second. Say it is idleing at 1000 rpm and it will rapidly shoot to 1100 rpm only for a quick second. That's Just a quick example
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Old 09-06-2012, 10:35 AM   #22
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It will only do it a few times until I engage it in gear
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Old 09-06-2012, 10:54 AM   #23
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Originally Posted by conklin_02 View Post
Well at idle, the Rpms increase very slightly and only for a quarter of a second. Say it is idleing at 1000 rpm and it will rapidly shoot to 1100 rpm only for a quick second. That's Just a quick example
The issues I listed can also cause idle and driveability issues, just that a bad injector is usually more severe and noticeable. If you get repeatable misfires on the same cylinder and you also have fuel trims issues, that would more likely point to an injector problem. But, you should rule out the 3 listed first because they are more common.

Bill
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Old 09-06-2012, 06:43 PM   #24
conklin_02
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Ok thank you. Really appreciate the help Bill. Are there any ways of inspecting the MAF to determine if it is bad? I can rule out the post intake tract leaks as i have done two smoke tests on it. I will look at the fron o2 sensor tomorrow or this weekend. Sorry i cannot just do it in one day. I am very busy so if you could just bear with me, that would be great! Again really appreciate the help
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Old 09-06-2012, 08:38 PM   #25
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Quote:
Originally Posted by conklin_02
Ok thank you. Really appreciate the help Bill. Are there any ways of inspecting the MAF to determine if it is bad? I can rule out the post intake tract leaks as i have done two smoke tests on it. I will look at the fron o2 sensor tomorrow or this weekend. Sorry i cannot just do it in one day. I am very busy so if you could just bear with me, that would be great! Again really appreciate the help
When you find the problem, also let me know so I can fix it too. Thanks, Ed.
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