Results 1 to 9 of 9

Thread: random kr with no throttle or load increase

  1. #1
    Tuner Onomoto's Avatar
    Join Date
    Aug 2018
    Location
    Ohio
    Posts
    120

    random kr with no throttle or load increase

    truck has been a work in progress. i figured i do need to adjust the ramp in for p.e ( was adjusting for fuel mileage and testing results) but i still get kr spikes with no load or throttle increase. open to all insight
    Attached Files Attached Files
    2001 monte carlo swapped l67 on e85
    XP cam
    gen5 m90
    NorthStar throttle body
    speed daddy headers 3inch exhaust
    3.0 pulley
    lq4 maf
    cold air filter behind bumper
    60 lb injectors

  2. #2
    Potential Tuner
    Join Date
    Jan 2020
    Location
    Illinois
    Posts
    1
    Could it have something to do with burst knock retard? It looks like the areas where kr was occuring saw increases in maf. I'd try disabling burst knock retard entirely and logging again.

  3. #3
    Tuner Onomoto's Avatar
    Join Date
    Aug 2018
    Location
    Ohio
    Posts
    120
    I have tried to research about disableing burst knock but I am having a difficult time trying to digest the info. If someone could point me to the disableing burst kr for dummies I would gladly read it.
    2001 monte carlo swapped l67 on e85
    XP cam
    gen5 m90
    NorthStar throttle body
    speed daddy headers 3inch exhaust
    3.0 pulley
    lq4 maf
    cold air filter behind bumper
    60 lb injectors

  4. #4
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
    Posts
    13,559
    Set the Burst Knock Enable Delta Cyl Air table to 8.000 to disable it.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  5. #5
    Tuner Onomoto's Avatar
    Join Date
    Aug 2018
    Location
    Ohio
    Posts
    120
    Ahhhhhh. I was waiting for you to chime in 5FDP.. Thank you sir.
    2001 monte carlo swapped l67 on e85
    XP cam
    gen5 m90
    NorthStar throttle body
    speed daddy headers 3inch exhaust
    3.0 pulley
    lq4 maf
    cold air filter behind bumper
    60 lb injectors

  6. #6
    Tuner Onomoto's Avatar
    Join Date
    Aug 2018
    Location
    Ohio
    Posts
    120
    I did remember reading up on how to disable per how you stated. What was confusing was reading the description in the software on how to remove it.
    2001 monte carlo swapped l67 on e85
    XP cam
    gen5 m90
    NorthStar throttle body
    speed daddy headers 3inch exhaust
    3.0 pulley
    lq4 maf
    cold air filter behind bumper
    60 lb injectors

  7. #7
    Tuner
    Join Date
    Jan 2019
    Location
    North Carolina
    Posts
    61
    So I am not good at this at all. I am still learning. But I did notice when your KR kicks in the Throttle position is matched with it so it does seem to happen when your map starts to climb. Out of curiosity what fuel are you running?

  8. #8
    Tuner Onomoto's Avatar
    Join Date
    Aug 2018
    Location
    Ohio
    Posts
    120
    For the time being crap 87 octane. I wouldn't think that the very minimal throttle pedal movement would effect the kr like it does but I guess that's why they call it learning.
    2001 monte carlo swapped l67 on e85
    XP cam
    gen5 m90
    NorthStar throttle body
    speed daddy headers 3inch exhaust
    3.0 pulley
    lq4 maf
    cold air filter behind bumper
    60 lb injectors

  9. #9
    Tuner Onomoto's Avatar
    Join Date
    Aug 2018
    Location
    Ohio
    Posts
    120
    So i have been plucking away and cant tell if i have made any real progress other than i dont get nearly as much tip in kr. In the snap shot you and see that i still get the damn knock. I remind you that the first 3/4 of the log is with the cruise on the highway and you can see the knock spike with no throttle increase by me i see the map and maf signal change as i was climbing a slight hill. and usually any load under cruise at the speed or rpm it always has kr. keep in mind i have added 4 deg to the spark table so am i being greedy and need to back it down a little? Another thing i noticed is sometimes the stft on both banks show negative while i am under light acceleration and kr starts to creep in
    Last edited by Onomoto; 02-18-2020 at 05:05 PM.
    2001 monte carlo swapped l67 on e85
    XP cam
    gen5 m90
    NorthStar throttle body
    speed daddy headers 3inch exhaust
    3.0 pulley
    lq4 maf
    cold air filter behind bumper
    60 lb injectors