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Old 02-17-2013, 10:03 PM   #1
Dan11WRX
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Default 2011 WRX- DataLog Issues - Lower DAM

Hey all,
I am very concerned about my datalogs, I have never noticed my DAM being lower then 1.0 and fine knock learning and the knock sum cylinder 4 are both up. Can someone with more knowledge then me please provide some insight into what may be going on...

Just some background, I am running an Invidia Catless Downpipe, SPT Catback Exhaust, Cobb SF Intake, and EFI Logics did the Stage 2 Tune for me. I always get gas from Shell or Sunoco and always run 93 Octane in the car, never had an issue with bad gas.

I did notice the other day that the coolant level in the resivoir was low but I just had a 30k mile service done and the radiator was flushed so it is possible that it just wasn't filled up all the way. I was planning on heading to subaru tomorrow to get a gallon of coolant to check if I'm losing coolant or not...

Any help or insight would be greatly appreciated... Hopefully I logged the correct parameters as I am hesitant to do anymore WOT 3rd Gear Pulls with the DAM not being 1.0. Thanks!!

Sorry I couldn't get it into a format other then PDF im bad at this stuff but I can email the excel spreadsheet to anyone who needs it...
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File Type: pdf datalog5.pdf (21.2 KB, 9 views)
File Type: pdf datalog6.pdf (21.4 KB, 2 views)
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Old 02-17-2013, 10:20 PM   #2
Dan11WRX
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Let me know if it works better through googledocs... here is DataLog 5

https://docs.google.com/file/d/0B9uq...it?usp=sharing

Last edited by Dan11WRX; 02-17-2013 at 10:27 PM. Reason: changed url
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Old 02-17-2013, 10:25 PM   #3
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Last edited by Dan11WRX; 02-17-2013 at 10:32 PM. Reason: changed url
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Old 02-18-2013, 12:27 AM   #4
Nemesis_STI
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Looks like you AF learning is waaaay out of whack. Id check your maf scaling

Last edited by Nemesis_STI; 02-18-2013 at 12:34 AM.
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Old 02-18-2013, 12:36 AM   #5
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a typical stage 2 ots map pulls ~270-280g/s your well over 300...
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Old 02-18-2013, 12:59 AM   #6
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Have you checked for boost leak? Common spots are the TMIC crimp area by the turbo and the throttle body coupler.
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Old 02-18-2013, 07:33 AM   #7
Dan11WRX
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Thanks for the comments, I will check for boost leaks. Although my car is hitting 21lbs which is right where he tuned it to, shouldnt that mean I dont have a leak? I have had leaks on my car before and both times they were very noticeable, for some reason my car seems to boost very hard, on the OTS Maps before I was tuned I needed to use the Stage 2 SLWG and i was still getting a fuel cut.

Should I take it back to the tuner to have him look at the MAF Scaling/AF Learning or is that something i could do? I have never played with it before, since the Protune my car always ran great until recently.
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Old 02-18-2013, 08:39 AM   #8
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your af learning values are way out of range usually meaning some kind of leak. how long ago was the tune done?
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Old 02-18-2013, 09:05 AM   #9
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With your A/F Learning being that negative, I can only assume a boost leak. If you have a vacuum leak you would be high on the positive side.

You are also overboosting. (according to your TD error). You need to get that boost leak fixed. Take it back to the guys at EFI if you can. No sense in damaging your car by trying to datalog and diagnose.
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Old 02-18-2013, 05:08 PM   #10
Airboy
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The MAF voltage vs MAF (g/s) above 4V looks normal for the Cobb SF intake.

The readings are much higher than it should though. Either a boost leak or the MAF sensor is not reading right. Perhaps try cleaning the MAF and reset the ECU if you don't see signs of boost leak (oil stains on the TMIC and coupler).

How cold was it when you collected the data logs?
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Old 02-18-2013, 06:47 PM   #11
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Thanks for the replys. The car was last tuned Dec 2011, a little over a year ago. The data logs are from last night, temperature outside was probably around 30 degrees F, give or take a few degrees.
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Old 02-18-2013, 10:59 PM   #12
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Hey Guys,

Just wanted to give you an update... I pulled the intercooler tonight and didn't notice any hoses blown off but I pulled it all apart and reattached everything with hose clamps tightened down. I also pulled the MAF sensor, which looked almost immaculate, and blew it off a bit with a little compressed air, making sure not to put the nozzle too close. I also reset the ECU and re-flashed the tune.

That seems to have fixed whatever quirks were going on and my DAM is back to 1.0

My question is to you think I should do another 3rd gear datalog pull for you guys to take a look at? And if so, were the parameters I used ok in the last ones ok or should I add or remove some. Thanks again for your help!! You have no idea how much I appreciate it!!!
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Old 02-18-2013, 11:28 PM   #13
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Give it a few miles and do another log for us
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Old 02-19-2013, 12:04 AM   #14
Dan11WRX
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Thumbs up New DataLog Numbers

As you requested here is the new DataLog...

https://docs.google.com/file/d/0B9uq...it?usp=sharing

Thanks again to everyone who responded

Should I also be concerned about any of the knock readings??
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Old 02-19-2013, 08:43 AM   #15
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Uh yeah you most definitely should be concerned about that knock. I am not trying to cause a panic or anything, but the -1.4 followed by -2.8 means you were getting multiple knock events back to back.

The tune actually looks solid though in terms of boost control and timing(to be expected from EFI!). Without seeing AF/R though we dont see the full picture. Try adding AF sensor #1 to give us an idea of your fueling. It isnt as good as a secondary wideband but it still helps.

Whatever you do, please get back into contact with EFI and send them this. That knock is the real deal, I dont want to see your blown motor thread.
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Old 02-19-2013, 12:03 PM   #16
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Any idea what would be causing that? Can I add AF Sensor #1 and log without doing a WOT 3rd gear pull to give you a better idea?
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Old 02-19-2013, 12:29 PM   #17
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You could but honestly, because you were tuned from such a reputable place, I would go straight to them with this info and get their help and not risk any damage to the car. Also, if you havent kept up on maintenance, spark plugs may need to be changed or air filter etc.
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Old 02-19-2013, 02:32 PM   #18
Airboy
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Quote:
Originally Posted by Dan11WRX View Post
As you requested here is the new DataLog...

https://docs.google.com/file/d/0B9uq...it?usp=sharing

Thanks again to everyone who responded

Should I also be concerned about any of the knock readings??
The MAF readings dropped by more than 10%, from ~370g/s to ~330g/s. Still a little high but better. Get the shop to look over your car.
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Old 02-19-2013, 10:12 PM   #19
Dan11WRX
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I was on the phone today with one of my tuners and he gave me some recommendations but I thought I would show you my most recent logs, taken today. I added Octane Booster to make sure that i didn't just get some bad gas but here goes... Check it out!!

First is a 3rd Gear Pull (still having some knock events)
https://docs.google.com/file/d/0B9uq...it?usp=sharing

Second is 2nd and 3rd Gear (wasn't at full throttle most of time but close)
https://docs.google.com/file/d/0B9uq...it?usp=sharing
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Old 02-20-2013, 09:11 AM   #20
endrswrd
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One thing I noticed is your IDCs are quite high. Well they look normal in the first 3rd gear pull but in the second one you hit 97% in the top of third gear. That means that in 4th+ you have to be going over 100% in similar conditions. If I were to guess at anything you may be getting into that that kind of territory where you are running out of fuel up top and thats where the knock is coming from.

Now have your Fuel trims stabilized? If they have then that issue is hopefully fixed.
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Old 02-23-2013, 04:33 PM   #21
Dan11WRX
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Thought I would give you all an update and let you know the problem. Went in for a compression test today and Cylinders # 1,2 & 3 were all at 160 which is excellent but Cylinder #4 was at 90 so I guess it's a ringland failure... Thank you everybody for the help the car is going back to stock and in to Subaru for a new shortblock I guess.
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Old 03-08-2013, 11:21 PM   #22
IrishC6
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Any update? Curious as to how things went with SOA.
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Old 03-08-2013, 11:52 PM   #23
endrswrd
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hes modded. so I am assuming his warranty claim on the engine will be denied.
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