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Old 07-24-2012, 09:06 PM   #1
adarikeOG
Scooby Newbie
 
Member#: 281429
Join Date: Apr 2011
Chapter/Region: RMIC
Location: SLC, UT
Vehicle:
2004 Stg 2 REX Wagon
PSM

Default Just installed DP and flashed STG 2, datalog check please!

Hey everybody. I just installed a Invidia Catted Divorced Wastegate Downpipe, in addition I have a 06 STi Catless Up-Pipe, SR-S Type-RE catback exhaust, Cobb SF Intake with air box, and an Mishimoto IC Hose Kit. My car was tuned with an AP to Stage 1 until today, when I reflashed to Stage 2 91 octane (v. 3.10). Here is a link to a datalog I just recorded right after installation of my DP. I noticed my DAM is at 15, and I know it should be at 16. Other than that, I don't know too much about how to read a log (I have watched Cobb's videos on making data logs and how to interpret them) If anybody could check it out and let me know how it looks that would be great! Thanks!

https://docs.google.com/spreadsheet/...2RkQVlGR2FOY3c
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Old 07-24-2012, 10:31 PM   #2
BigRob74
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Member#: 305107
Join Date: Dec 2011
Chapter/Region: Tri-State
Location: Long Island, NY
Vehicle:
2012 wrx
360/386 E85

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lots of fine knock is what is see
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Old 07-24-2012, 10:47 PM   #3
bluemax189
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Chapter/Region: MAIC
Location: Baltimore
Vehicle:
2011 WRX
20g

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try the 91 octane map to see if the knock goes away.
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Old 07-25-2012, 10:43 AM   #4
Cobb Tuning
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Join Date: Mar 2001
Location: Austin, DFW, Portland, SOCAL
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Quote:
Originally Posted by adarikeOG View Post
Hey everybody. I just installed a Invidia Catted Divorced Wastegate Downpipe, in addition I have a 06 STi Catless Up-Pipe, SR-S Type-RE catback exhaust, Cobb SF Intake with air box, and an Mishimoto IC Hose Kit. My car was tuned with an AP to Stage 1 until today, when I reflashed to Stage 2 91 octane (v. 3.10). Here is a link to a datalog I just recorded right after installation of my DP. I noticed my DAM is at 15, and I know it should be at 16. Other than that, I don't know too much about how to read a log (I have watched Cobb's videos on making data logs and how to interpret them) If anybody could check it out and let me know how it looks that would be great! Thanks!

https://docs.google.com/spreadsheet/...2RkQVlGR2FOY3c
Your DAM has dropped to 15, which indicates that a series of knock events has occurred. There are common mechanical problems with these older cars that typically involve fueling. What I would do is drive around normally (no heavy throttle for now) for about a tank of gas without reflashing any maps or resetting the ECU. Then take a look at your long-term fuel trims via live data (A/F Learning 1 A, B, C, D). That will usually tell us if there is a problem if any of those trims are well outside of +/- 5% (but it takes some driving for them to populate accurately).

Bill
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Old 07-25-2012, 06:05 PM   #5
adarikeOG
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Member#: 281429
Join Date: Apr 2011
Chapter/Region: RMIC
Location: SLC, UT
Vehicle:
2004 Stg 2 REX Wagon
PSM

Default

Quote:
Originally Posted by Cobb Tuning
Your DAM has dropped to 15, which indicates that a series of knock events has occurred. There are common mechanical problems with these older cars that typically involve fueling. What I would do is drive around normally (no heavy throttle for now) for about a tank of gas without reflashing any maps or resetting the ECU. Then take a look at your long-term fuel trims via live data (A/F Learning 1 A, B, C, D). That will usually tell us if there is a problem if any of those trims are well outside of +/- 5% (but it takes some driving for them to populate accurately).

Bill
I will definitely do that. If the values stay outside of +/- 5% what sort of problem might that indicate? I know MAF failures are fairly common with these cars, but I think mine is still fine. I clean it at every oil change. Thanks for all the help!

Adam
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Old 07-25-2012, 06:06 PM   #6
adarikeOG
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Member#: 281429
Join Date: Apr 2011
Chapter/Region: RMIC
Location: SLC, UT
Vehicle:
2004 Stg 2 REX Wagon
PSM

Default

Also, I completely forgot to mention, car has 121000 miles on it.
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Old 07-26-2012, 09:11 AM   #7
Cobb Tuning
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Originally Posted by adarikeOG View Post
I will definitely do that. If the values stay outside of +/- 5% what sort of problem might that indicate? I know MAF failures are fairly common with these cars, but I think mine is still fine. I clean it at every oil change. Thanks for all the help!

Adam
Extreme values can indicate intake tract leak, bad/tired MAF sensor, bad front o2, or other mechanical fueling issue.

Bill
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