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Old 09-12-2012, 09:15 PM   #1
ricky0418
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Default 2011 wrx Normal driving datalog, Knocking?

its a 2011 wrx only mod a invidia catback, running a stage1 93 octane Cobb OTS map. is it knocking ? and what are my options should i try a different map?

https://docs.google.com/spreadsheet/...EcwVVh6RS1iSlE
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Old 09-12-2012, 10:34 PM   #2
bacalhau16
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None of your log is useful. YouTube Wrx Cobb Datalog How to. You need to be in 3rd gear, just above 2k rpm and go WOT till redline. And where date to do so. Watch the video though and others. Great learning tools.
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Old 09-12-2012, 10:40 PM   #3
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Originally Posted by bacalhau16 View Post
None of your log is useful. YouTube Wrx Cobb Datalog How to. You need to be in 3rd gear, just above 2k rpm and go WOT till redline. And where date to do so. Watch the video though and others. Great learning tools.
so what is those numbers that showed on the feedback knock column? i was datalogging normal driving. oh man this stuff is complicated lol
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Old 09-13-2012, 04:18 AM   #4
kaczmarz
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Touch the gas pedal only very slightly when you're under 2000 RPM at 3+ gear!

You don't have any boost/torque there.

Better yet, stay above 2000 RPM in 3+ gear all the time unless you're cruising.
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Old 09-13-2012, 09:40 AM   #5
Cobb Tuning
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Originally Posted by ricky0418 View Post
its a 2011 wrx only mod a invidia catback, running a stage1 93 octane Cobb OTS map. is it knocking ? and what are my options should i try a different map?

https://docs.google.com/spreadsheet/...EcwVVh6RS1iSlE
You want to put the car under some load (if you can do safely) so we can see how it reacts. Check out our data logging video below.


Bill
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Old 09-13-2012, 02:33 PM   #6
ricky0418
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i tried the best i could , but its a hard thing to do in NYC, here are 2 more datolgs i did today
https://docs.google.com/spreadsheet/...2tKSjFRaGlibUE

https://docs.google.com/spreadsheet/...1k1QmNadXlYdlE
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Old 09-13-2012, 03:32 PM   #7
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Change your map to the 91oct map. You're getting fine knock learn in the high rpm's which isn't good. Post logs of the 91oct map.
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Old 09-13-2012, 11:32 PM   #8
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Originally Posted by ricky0418 View Post
i tried the best i could , but its a hard thing to do in NYC, here are 2 more datolgs i did today
https://docs.google.com/spreadsheet/...2tKSjFRaGlibUE

https://docs.google.com/spreadsheet/...1k1QmNadXlYdlE
You have some knock in the first log - I would reflash the 91 octane map. One of your A/F Learning 1 trims in the very low airflow range is borderline high (+7%) - I would keep an eye on that to see if it gets worse there (or in any range). You may have an intake tract leak.

Bill
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Old 09-14-2012, 04:12 PM   #9
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Quote:
Originally Posted by Cobb Tuning View Post
You have some knock in the first log - I would reflash the 91 octane map. One of your A/F Learning 1 trims in the very low airflow range is borderline high (+7%) - I would keep an eye on that to see if it gets worse there (or in any range). You may have an intake tract leak.

Bill
Thanks ! I switched to the stage 1 91 octane map and i did 3 more datalogs , i tried my best to do it safely and without getting caught speeding .and i also changed to a new gas station.

https://docs.google.com/spreadsheet/...mR5anIxYnlmMEE

https://docs.google.com/spreadsheet/...3pac2NNNTBlZHc

https://docs.google.com/spreadsheet/...3BQME5qVHlSNEE
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Old 09-15-2012, 02:39 PM   #10
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Originally Posted by ricky0418 View Post
Thanks ! I switched to the stage 1 91 octane map and i did 3 more datalogs , i tried my best to do it safely and without getting caught speeding .and i also changed to a new gas station.

https://docs.google.com/spreadsheet/...mR5anIxYnlmMEE

https://docs.google.com/spreadsheet/...3pac2NNNTBlZHc

https://docs.google.com/spreadsheet/...3BQME5qVHlSNEE
The first two logs look good. The last log has a single count of feedback knock correction. I would continue driving the car on the 91 map and see where your fuel trims end up (through a tank of gas). They were cleared when you reflashed the map, so they will take some time to populate.

Bill
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Old 09-16-2012, 10:25 PM   #11
ricky0418
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Quote:
Originally Posted by Cobb Tuning View Post
The first two logs look good. The last log has a single count of feedback knock correction. I would continue driving the car on the 91 map and see where your fuel trims end up (through a tank of gas). They were cleared when you reflashed the map, so they will take some time to populate.

Bill
this is a datalog i did today, stage 1 91 octane.
https://docs.google.com/spreadsheet/...kt4bktuUzNleWc
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Old 09-17-2012, 09:41 AM   #12
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Originally Posted by ricky0418 View Post
this is a datalog i did today, stage 1 91 octane.
https://docs.google.com/spreadsheet/...kt4bktuUzNleWc
How much driving have you done since you reflashed the 91 map?

Bill
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Old 09-17-2012, 10:03 AM   #13
ricky0418
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How much driving have you done since you reflashed the 91 map?

Bill
about 100 miles more or less
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Old 09-17-2012, 11:47 AM   #14
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I literally just swapped over to the 91 oct map after experiencing some FKL in the 2-3k range. Mine took effect immediately after driving and I had no knock. I'll log again after a week of driving, but in my opinion, what you were experiencing with the 93 oct map should have gone away after switching.
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Old 09-17-2012, 12:26 PM   #15
ricky0418
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I don't really know what to do at this point :/ .How bad is it? Would a protune fix this ?
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Old 09-18-2012, 03:34 AM   #16
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its not that bad. You're DAM is still at 1 which is good. This is basically saying you are on the optimal timing map.

Like said before, continue to get through this tank of gas, fill up with the best gas in town and log again.
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Old 09-18-2012, 09:28 AM   #17
Cobb Tuning
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Quote:
Originally Posted by ricky0418 View Post
about 100 miles more or less
Continue driving some more and then check the long-term fuel trims (A/F Learning 1 A, B, C, D. Switching to a quality gas brand, as bacalhau16 suggested, is also a very good idea. It could be what you were filling up with is very low quality (or even just the station itself). Or, you could have a mechanical issue that is causing a problem (fueling is a big area where you can have issues which is why it is good to check your long-term fuel trims once they've had enough time to populate more accurately).

Bill
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