Welcome to the North American Subaru Impreza Owners Club Thursday September 18, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Engine Management & Tuning > AccessPort

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 10-07-2012, 11:00 PM   #1
EricInHoodRiver
Scooby Newbie
 
Member#: 299737
Join Date: Nov 2011
Chapter/Region: NWIC
Vehicle:
2011 WRX Hatch
Cobb Stage 2 Protune

Default

2011 wrx with Cobb custom dyno stage 2 pro tune at Surgeline. Process West tmic and Cobb catted dp are only mods. This is the 17.5 psi map which has been on car for two weeks or so. Car feels and sounds great. These are 3rd gear pulls on the freeway. Any cause for concern?






https://docs.google.com/open?id=0Byn...2FDanlCR0NoclU
* Registered users of the site do not see these ads.

Last edited by EricInHoodRiver; 10-08-2012 at 12:04 AM.
EricInHoodRiver is offline   Reply With Quote
Old 10-07-2012, 11:07 PM   #2
eg33GC
Scooby Specialist
 
Member#: 206851
Join Date: Mar 2009
Chapter/Region: MWSOC
Vehicle:
99 V4
EJ20K RS

Default

both files 404
eg33GC is offline   Reply With Quote
Old 10-07-2012, 11:12 PM   #3
EricInHoodRiver
Scooby Newbie
 
Member#: 299737
Join Date: Nov 2011
Chapter/Region: NWIC
Vehicle:
2011 WRX Hatch
Cobb Stage 2 Protune

Default

Can't get my darn google docs to work...

3 pull 2500-6400 rpm in 3rd

A/F learning is all 0's thru entire pull. DAM all 1's. Feedback knock all 0's. Fine knock learning starts at 0 for several cells, then has 4 cells at -1.05 at 16-18 psi and 3500 to 4100 rpm, then back to 0's until -1.4 for two cells at 6400 rpm and 13.5 psi at very end of pull

Can't figure out what's up with google docs. Put "shared with link" to my files
EricInHoodRiver is offline   Reply With Quote
Old 10-07-2012, 11:20 PM   #4
EricInHoodRiver
Scooby Newbie
 
Member#: 299737
Join Date: Nov 2011
Chapter/Region: NWIC
Vehicle:
2011 WRX Hatch
Cobb Stage 2 Protune

Default

Can't get google docs to play nice
EricInHoodRiver is offline   Reply With Quote
Old 10-08-2012, 09:09 AM   #5
Cobb Tuning
NASIOC Vendor
 
Member#: 4803
Join Date: Mar 2001
Location: Austin, DFW, Portland, SOCAL
Default

Quote:
Originally Posted by EricInHoodRiver View Post
Can't get google docs to play nice
You can post up the original .csv file over at the cobbforums ("Go Advanced" -> "Manage Attachments").

Bill
Cobb Tuning is offline   Reply With Quote
Old 10-08-2012, 09:52 AM   #6
EricInHoodRiver
Scooby Newbie
 
Member#: 299737
Join Date: Nov 2011
Chapter/Region: NWIC
Vehicle:
2011 WRX Hatch
Cobb Stage 2 Protune

Default

Thanks Bill. Just now attached csv files at Cobb and reposted: Subaru--Subaru Engine Performance--A Little Fine Knock LEarning in Logs--CSV files posted

Obliged if you can take a look

Thanks

Eric

Last edited by EricInHoodRiver; 10-08-2012 at 09:59 AM.
EricInHoodRiver is offline   Reply With Quote
Old 10-09-2012, 11:41 PM   #7
mikeydrives1
Scooby Specialist
 
Member#: 262117
Join Date: Oct 2010
Chapter/Region: Tri-State
Vehicle:
2001 Forester
STi II type M

Default

From my understanding and continued learning in the tuning field, knock can be generated from a number of things, but the ECU has settings where it combats the knock by pulling timing for small ranges until the knock goes down. Based on atmospheric and fuel conditions, sometimes there will be a little knock ( at least from my experience) from time to time... the ecu manages it though.

The good thing about that logis that the DAM is at 1 and there is no feedback knock, which indicates a healthy operation. It seems to make the neccesary adjustments when the fine knock is triggered, which goes back to 0 when it does.

Maybe someone will see it differently than i do... im just a learner at this point in time. Do some more logging and see if its consistent or varies. This will help give us some better insight.
mikeydrives1 is offline   Reply With Quote
Old 10-10-2012, 11:00 PM   #8
EricInHoodRiver
Scooby Newbie
 
Member#: 299737
Join Date: Nov 2011
Chapter/Region: NWIC
Vehicle:
2011 WRX Hatch
Cobb Stage 2 Protune

Default

I reflashed to my 16 psi protune map three days ago, filled tank yesterday and did three more pulls today. A/F1 is back to all zeros through all pulls, DAM remains at 1, Feedback knock remains at 0. But, on all three logs I have four cells of -2.5 for Fine Knock Learning from 5800 to 6300 rpm. Note that prior to today's logs I never went over 4500 rpm on the recent map reflash, so I can't see how anything could have been learned in that rpm range by the ECU?

Eric
EricInHoodRiver is offline   Reply With Quote
Old 10-11-2012, 09:04 AM   #9
Cobb Tuning
NASIOC Vendor
 
Member#: 4803
Join Date: Mar 2001
Location: Austin, DFW, Portland, SOCAL
Default

Quote:
Originally Posted by EricInHoodRiver View Post
I reflashed to my 16 psi protune map three days ago, filled tank yesterday and did three more pulls today. A/F1 is back to all zeros through all pulls, DAM remains at 1, Feedback knock remains at 0. But, on all three logs I have four cells of -2.5 for Fine Knock Learning from 5800 to 6300 rpm. Note that prior to today's logs I never went over 4500 rpm on the recent map reflash, so I can't see how anything could have been learned in that rpm range by the ECU?

Eric
Depends on what the ranges are set to in the tune. There are load and RPM ranges, so you can pass into the RPM range (but not the load range) where the correction is stored and then hit the load range and it pops up, making it appear that it is applied at a higher RPM only, for example, when it was actually learned at a lower RPM and applied across a broader RPM than you think (with corresponding load range).

Bill
Cobb Tuning is offline   Reply With Quote
Old 10-11-2012, 10:10 AM   #10
EricInHoodRiver
Scooby Newbie
 
Member#: 299737
Join Date: Nov 2011
Chapter/Region: NWIC
Vehicle:
2011 WRX Hatch
Cobb Stage 2 Protune

Default

Posted my three 16 psi logs over at Cobb on my thread. I understand what you are saying. Mind taking a look?

Thanks,
Eric
EricInHoodRiver is offline   Reply With Quote
Old 10-12-2012, 08:34 AM   #11
Cobb Tuning
NASIOC Vendor
 
Member#: 4803
Join Date: Mar 2001
Location: Austin, DFW, Portland, SOCAL
Default

Quote:
Originally Posted by EricInHoodRiver View Post
Posted my three 16 psi logs over at Cobb on my thread. I understand what you are saying. Mind taking a look?

Thanks,
Eric
I would go ahead and add the knock sums to the log. Don't worry about the knock sum values themselves (will be higher in cylinder 4 than others - this is normal), but look at when any one of them increments at WOT. That would be a current perceived knock event. I can't make a determination of whether the knock in your logs is current without knowing how the load/RPM ranges for fine knock learning table are set up in the tune. Remember that the decrement is 1.4 deg. for fine knock learning and the increment is 0.35, so when you see a value like -2.45, that is not a current learned event, but a previous -2.8 event that has started to learn back to zero. Regardless, add the knock sum - that will make it easier to determine current knock.

Bill
Cobb Tuning is offline   Reply With Quote
Old 10-12-2012, 09:30 AM   #12
EricInHoodRiver
Scooby Newbie
 
Member#: 299737
Join Date: Nov 2011
Chapter/Region: NWIC
Vehicle:
2011 WRX Hatch
Cobb Stage 2 Protune

Default

Okay. just added Knock Sum Cyl 1 through 4 to default log list. I'll try and get log in soon and send it to the Cobb Forum--I have given up on google docs for now as something is completely fuhbahed since updating to their latest version on my Mac--so files will be directly from the accessport.

Thanks much
I assume I don't need "Knock Active Sw"

Eric
EricInHoodRiver is offline   Reply With Quote
Old 10-12-2012, 09:32 AM   #13
Cobb Tuning
NASIOC Vendor
 
Member#: 4803
Join Date: Mar 2001
Location: Austin, DFW, Portland, SOCAL
Default

Quote:
Originally Posted by EricInHoodRiver View Post
Okay. just added Knock Sum Cyl 1 through 4 to default log list. I'll try and get log in soon and send it to the Cobb Forum--I have given up on google docs for now as something is completely fuhbahed since updating to their latest version on my Mac--so files will be directly from the accessport.

Thanks much
I assume I don't need "Knock Active Sw"

Eric
No, the "Knock Active Sw" does not have enough resolution to really be useful (switches too fast to always be picked up by logging).

Bill
Cobb Tuning is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 12:23 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.