Results 1 to 6 of 6

Thread: Noob at datalogging that needs some help

  1. #1
    Experienced Emin's Avatar
    Join Date
    Nov 2013
    Location
    Glendale, California, United States
    Posts
    112
    Cars
    2014 Evo x, 2002 BMW x5 4.4L

    Noob at datalogging that needs some help

    Question guys, when it comes to monitoring your car via data logs, how much knock can your car have on the safe side? And are knocks only at high WOT rpms? I was told one to two if fine but I'm kinda sketched out. I dataloged my car and apparently my car had two knocks at WOT but when cruising its fine. I was going to go out and do another pull and see if it happens again. My car at wot has two knocks. Is that safe? Sorry if i sound like a noob lol kinda new to this stuff

  2. #2
    SoCalEvo.net Shop


    Mike W's Avatar
    Join Date
    Dec 2003
    Location
    RRE
    Posts
    3,221
    The knock count is kind of like alarm bells. The ECU starts to do something about it after a 3 count. You seeing a 1 or 2 randomly and occasionally is normal. Stock cars do that. If a 3 count (or more) is consistent and at the same RPM, then you would want to get it checked out. Add a little fuel right there or see if pulling one degree of timing fixes it. If your car is tuned, your tuner would have all the answers and solutions for you.

    Mike W

  3. #3
    Experienced Emin's Avatar
    Join Date
    Nov 2013
    Location
    Glendale, California, United States
    Posts
    112
    Cars
    2014 Evo x, 2002 BMW x5 4.4L
    Thanks alot for the reply Mike, The knock only happens at mid to high rpms at around 14psi. It hasn't hit 3 yet but i was just skeptical because the tune is stage 1 map on Cobb AP. Planning to get a protune soon tho!

  4. #4
    SoCalEvo.net Shop


    Mike W's Avatar
    Join Date
    Dec 2003
    Location
    RRE
    Posts
    3,221
    The Cobb base maps are usually super safe if you have the right map for the right parts.

    Mike W

  5. #5
    Experienced Emin's Avatar
    Join Date
    Nov 2013
    Location
    Glendale, California, United States
    Posts
    112
    Cars
    2014 Evo x, 2002 BMW x5 4.4L
    Hey Mike, So its been a while since i have put my stuff on and on occasion i sometimes get a knocksum count of 3.... should i worry about it? Thank you in advance!

  6. #6
    SoCalEvo.net Shop


    Mike W's Avatar
    Join Date
    Dec 2003
    Location
    RRE
    Posts
    3,221
    Concerned yes. Panic or worry not so much. Random and occasional knock is typical. If it is consistent at the same load and RPM through and into different tank of gas, get a datalog to someone that knows how to read one and can also do something about it.

    Mike W

Posting Permissions

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