Page 2 of 4 FirstFirst 1234 LastLast
Results 11 to 20 of 39

Thread: Dreaded knock.... cant seem to get my tune right

  1. #11
    R.I.P Shawn, 1956-2011 WeathermanShawn's Avatar
    Join Date
    Jul 2008
    Posts
    1,807

    Default

    O.K..now I get it!

    Man, you guys are smart..Now what up with his tune?.

    Thanks (I mean it..not being sarcastic..)..
    2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425HP/410TQ SAE (400TQ@3500RPM)
    200cc Heads, 228/232 110+2 Cam, 1 3/4" LT's w/catts, GMMG, Koni Shocks, Hotchkis Springs, 35/21 Sways, 17" ZR1's, 3.90 Gears Roadrunner PCM LM-2 Serial Wideband
    EFILive Closed-Loop MAF/SD Hybrid Tune..


  2. #12
    Lifetime Member Chevy366's Avatar
    Join Date
    Oct 2006
    Posts
    1,603

    Default

    Ha , already on another OS Android (phone) , so cant view his tune and log .
    Will leave that to you , "grasshopper" . ;-)
    Just so I dont get in trouble, grasshopper was what was used by a priest to describe a young student in Kung Fu TV series. :-)
    Last edited by Chevy366; June 2nd, 2010 at 05:35 AM.
    2005 1500 HD , Custom OS3 SD tune .
    2006 Trailblazer
    Dinosaurs and Plants gave their lives so that we may drive , long live fossil fuel .

  3. #13
    R.I.P Shawn, 1956-2011 WeathermanShawn's Avatar
    Join Date
    Jul 2008
    Posts
    1,807

    Default

    Dopey:

    So far, the main issue I see is that you are running Open-Loop..but you have not defaulted the MAF C2901-C2904..Since you have B0120 set to 4000 RPM, you are running Open-loop, but you are not running OLMAF or SD. Basically, it is impossible to do.

    This is verified by the fact that you are still running off the High-Octane Spark Table.

    You either need to default the MAF (SD-Tune), or set B0120 to 400 RPM (OLMAF), or set B4205 to stock Temp Values (Closed-Loop). I would imagine that your airflow values are jumping all over the place, and hence your Spark values are just as erratic. If you get the Tune parameters set correctly, you will find your fuel and spark values will fall in line.

    Thats my take. Good luck..

    Edit: Dopey..maybe its the new forum look or I just need clarification. Is this a Custom OS? That may require some further investigating (on my part) concerning closed-vs open-loop parameters. I.E., my answer is premised on a non-custom OS tune..If it is custom..then it I would have to rethink my review..

    Thanks..
    Last edited by WeathermanShawn; June 2nd, 2010 at 05:53 AM. Reason: Clarification..
    2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425HP/410TQ SAE (400TQ@3500RPM)
    200cc Heads, 228/232 110+2 Cam, 1 3/4" LT's w/catts, GMMG, Koni Shocks, Hotchkis Springs, 35/21 Sways, 17" ZR1's, 3.90 Gears Roadrunner PCM LM-2 Serial Wideband
    EFILive Closed-Loop MAF/SD Hybrid Tune..


  4. #14
    R.I.P Shawn, 1956-2011 WeathermanShawn's Avatar
    Join Date
    Jul 2008
    Posts
    1,807

    Default

    Quote Originally Posted by Chevy366 View Post
    Ha , already on another OS Android (phone) , so cant view his tune and log .
    Will leave that to you , "grasshopper" . ;-)
    Just so I dont get in trouble, grasshopper was what was used by a priest to describe a young student in Kung Fu TV series. :-)
    Yea, I got you. I am old enough to remember the T.V. series..
    2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425HP/410TQ SAE (400TQ@3500RPM)
    200cc Heads, 228/232 110+2 Cam, 1 3/4" LT's w/catts, GMMG, Koni Shocks, Hotchkis Springs, 35/21 Sways, 17" ZR1's, 3.90 Gears Roadrunner PCM LM-2 Serial Wideband
    EFILive Closed-Loop MAF/SD Hybrid Tune..


  5. #15
    Member
    Join Date
    Oct 2005
    Posts
    88

    Default

    Quote Originally Posted by WeathermanShawn View Post
    Dopey:

    This is verified by the fact that you are still running off the High-Octane Spark Table.

    Thanks..[/I][/COLOR]
    What info tells you that?

  6. #16
    R.I.P Shawn, 1956-2011 WeathermanShawn's Avatar
    Join Date
    Jul 2008
    Posts
    1,807

    Default

    Attachment 8136Attachment 8137Attachment 8138

    Attachment 8141Attachment 8140Attachment 8139

    I linked his DYNCYLAIR PID to both the High & Low Octane Chart.

    His log shows he is running off his High-Octane Spark..I just do not know what type of Tune he is running. A Custom OP will let you do what he is trying to do..

    Does not explain the KR. Could be airflow..fuel..and even summer IAT's. It it kinda all over the place.

    Anybody else see anything?
    Last edited by WeathermanShawn; June 2nd, 2010 at 08:10 AM. Reason: Typo..
    2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425HP/410TQ SAE (400TQ@3500RPM)
    200cc Heads, 228/232 110+2 Cam, 1 3/4" LT's w/catts, GMMG, Koni Shocks, Hotchkis Springs, 35/21 Sways, 17" ZR1's, 3.90 Gears Roadrunner PCM LM-2 Serial Wideband
    EFILive Closed-Loop MAF/SD Hybrid Tune..


  7. #17
    Member
    Join Date
    Oct 2005
    Posts
    88

    Default

    Quote Originally Posted by WeathermanShawn View Post

    I linked his DYNCYLAIR PID to both the High & Low Octane Chart.
    How do you link them?

  8. #18
    R.I.P Shawn, 1956-2011 WeathermanShawn's Avatar
    Join Date
    Jul 2008
    Posts
    1,807

    Default

    In the EFILive Tune Tool, I check the following (see attachment)..

    There are a few other rules..I think you want your Pids and Tune Units to be the same..I.E. Metric etc..There have been a few recent posts (Tips and tricks)..but that is how I do it.

    In this case, DYNCYLAIR (g/s)..is how I tracked it..
    2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425HP/410TQ SAE (400TQ@3500RPM)
    200cc Heads, 228/232 110+2 Cam, 1 3/4" LT's w/catts, GMMG, Koni Shocks, Hotchkis Springs, 35/21 Sways, 17" ZR1's, 3.90 Gears Roadrunner PCM LM-2 Serial Wideband
    EFILive Closed-Loop MAF/SD Hybrid Tune..


  9. #19
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    I've been busy, but I'll catch up on this thread later tonite.

  10. #20
    Junior Member
    Join Date
    Jan 2008
    Posts
    32

    Default

    wow! I definately did not expect this many replies so soon, haha.

    Sorry, I posted it up late last night and forgot to include the OS its COS3 01290003 I believe (hence I didnt think any of those MAF paramaters were applicable). But it would be music to my ears if it was something so simple

    I am wanting to run OLSD and ditch the 02's (and keep the wideband in permanently). One thing I noticed, is I had set B3601 to 14.7 after reading about the AutoVE being skewed by the W02 having a different lambada value vs the tune, however I just re-opened it and it has gone back to 14.68 Im guessing this is the bit depth used to store this variable? I have checked that there are no instances that the commanded is Lambada in b3647 so it should not enter semi-OLSD.

    I have re-attached the .ctd as a .tun file just in case any one else is having issues (I have changed the default program for .ctd to the Tune tool, let me know if anyone wants screen caps on how to do this in Win7).

    *Edit*
    A bit more info, I also thought it was not using the low spark tables, but I dont know why? Ambient temps were around ~16*C (60*F for some) during the log last night.
    Also, I have disabled BKR by zeroing out B6212 so I dont think it has anything to do with that either... I have gone back to the base tune so many times, I may have left something out... Although I did get the tune done by a respected tuner here who has got nothing but rave reviews from others, so theoretically it should have the correct settings in the base tune.
    Attached Files Attached Files
    Last edited by Dopey; June 2nd, 2010 at 11:27 AM.

Page 2 of 4 FirstFirst 1234 LastLast

Similar Threads

  1. Knock at WOT
    By Epox4life in forum Gen III V8 Specific
    Replies: 17
    Last Post: March 31st, 2010, 11:36 AM
  2. Knock Retard GM.KNKRET vs Retard Due to Knock GM.KR
    By Gelf VXR in forum General (Petrol, Gas, Ethanol)
    Replies: 3
    Last Post: March 9th, 2008, 04:18 AM
  3. Knock after COS #3 install, but never had knock before
    By CRU SS N in forum Custom Operating Systems
    Replies: 12
    Last Post: June 15th, 2007, 10:07 PM
  4. Knock knock.... who's there? KR
    By Whippled 496 in forum General (Petrol, Gas, Ethanol)
    Replies: 24
    Last Post: September 24th, 2006, 10:59 PM
  5. Can't get rid of knock
    By jsttry in forum General (Petrol, Gas, Ethanol)
    Replies: 9
    Last Post: May 11th, 2005, 12:56 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •