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Old 09-05-2012, 01:10 PM   #1
bmcgovern
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Member#: 261947
Join Date: Oct 2010
Chapter/Region: Tri-State
Location: Yonkers, NY
Vehicle:
2012 WRX
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Default Cobb stage 1 AEM tune LOGS!!!

I just installed a forge BPV on my stage 1 AEM map normal waste gate it does not seem to be correct i would like another view. These 4 logs are how my car is now then in the next post i am going to put all the logs of how my car was running before thanks again. Just to clarify the last Log i changed the spring to a softer one as well.
https://docs.google.com/spreadsheet/...3NZWWxySFREeUE
https://docs.google.com/spreadsheet/...XNtc09LNDF1bkE
https://docs.google.com/spreadsheet/...GRJRXBRSk9zYmc
https://docs.google.com/spreadsheet/...WhFWjlDZ3U4TWc
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Old 09-05-2012, 01:48 PM   #3
jebjkey
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Join Date: Nov 2004
Chapter/Region: International
Location: Naples, ITALY
Vehicle:
2005 STi
2006 Evolution MR

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Did you replaced the stock BPV because it had a problem?, because it is plastic?, or some other reason?

Did you reset your ECU after you installed the new BPV?

If there was a problem with the stock BPV, then the ECU will have learned parameters based on the problem with the stock BPV. By installing a new BPV, the ECU will be potentially using bad information to control the engine.

By resetting the ECU, you put all learned parameters back to their default values. Whenever you make a change to the car that does not flash a new map into the ECU, always reset the ECU for best results and the most accurate data.
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Old 09-05-2012, 05:37 PM   #4
bmcgovern
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2012 WRX
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I just reset it and ran two more logs so hopefully these look better i got no knock but i hope someone can look and check everything out i really appreciate it guys!!
https://docs.google.com/spreadsheet/...GtEc0ctTG95ZHc
https://docs.google.com/spreadsheet/...nBSUmtLWjR6R3c

Quote:
Originally Posted by jebjkey View Post
Did you replaced the stock BPV because it had a problem?, because it is plastic?, or some other reason?

Did you reset your ECU after you installed the new BPV?

If there was a problem with the stock BPV, then the ECU will have learned parameters based on the problem with the stock BPV. By installing a new BPV, the ECU will be potentially using bad information to control the engine.

By resetting the ECU, you put all learned parameters back to their default values. Whenever you make a change to the car that does not flash a new map into the ECU, always reset the ECU for best results and the most accurate data.
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Old 09-06-2012, 07:47 AM   #5
Cobb Tuning
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Location: Austin, DFW, Portland, SOCAL
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Quote:
Originally Posted by bmcgovern View Post
I just reset it and ran two more logs so hopefully these look better i got no knock but i hope someone can look and check everything out i really appreciate it guys!!
https://docs.google.com/spreadsheet/...GtEc0ctTG95ZHc
https://docs.google.com/spreadsheet/...nBSUmtLWjR6R3c
There logs look good, but since you were having issues with erratic/extreme fuel trims in the previous logs, I would go ahead and get a pressure or smoke test of the intake tract done to check for leaks. Resetting the ECU will clear your long-term trims so it can take some time for them to re-populate accurately. You can drive some more (without reflashing any maps or resetting the ECU) through about a tank of gas or so and then see where they are at (A/F Learning 1 A,B,C,D). But, I would get the pressure/smoke test done anyway.

Bill
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Old 09-06-2012, 01:58 PM   #6
bmcgovern
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2012 WRX
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Thanks bill do you think I really need a pressure test though the car only has 2,400miles
Quote:
Originally Posted by Cobb Tuning
There logs look good, but since you were having issues with erratic/extreme fuel trims in the previous logs, I would go ahead and get a pressure or smoke test of the intake tract done to check for leaks. Resetting the ECU will clear your long-term trims so it can take some time for them to re-populate accurately. You can drive some more (without reflashing any maps or resetting the ECU) through about a tank of gas or so and then see where they are at (A/F Learning 1 A,B,C,D). But, I would get the pressure/smoke test done anyway.

Bill
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Old 09-06-2012, 02:24 PM   #7
Cobb Tuning
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Quote:
Originally Posted by bmcgovern View Post
Thanks bill do you think I really need a pressure test though the car only has 2,400miles
I would since you have touched portions of the intake tract (BPV and intake). It is also not impossible to have a loose clamp or something incorrectly installed from the factory.

Bill
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