Feedback Knock Question
+ Reply to Thread
Results 1 to 4 of 4

This is a discussion on Feedback Knock Question within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; Hey guys, Sorry if this is super newbie, but I was wondering if it's normal to see -1.4 or -2.8 ...

  1. #1
    Registered User WrxNate's Avatar
    Join Date
    Aug 2013
    Location
    Milwaukee,WI
    Posts
    174

    Feedback Knock Question

    Hey guys,

    Sorry if this is super newbie, but I was wondering if it's normal to see -1.4 or -2.8 feedback knock when turning in second. I'm currently running 93 octane stage 1 OTS from Cobb. Thanks for all the help guys.

  2. Remove Advertisements
    ClubWRX.net
    Advertisements
     

  3. #2
    Registered User speedtown's Avatar
    Join Date
    Feb 2012
    Location
    VT
    Posts
    173
    I'm not sure about just when you're turning but yes a lot of people have seen that type of knock with the OTS maps. It's not something to be overly concerned about, unless it starts getting really high. Are those numbers at part throttle?

    I get about 1.4 very randomly and a lot of people go crazy watching their AP to try and find when and why that knock shows up. I gave up on it, it was to random for me to pinpoint it.

  4. #3
    Registered User G0ATLIF3's Avatar
    Join Date
    Mar 2014
    Location
    Alberta Canada
    Posts
    65
    I have knock in WOT that will creep up to -2.1, I was worried about it but when i went in for my second Protune we listened for it everytime and even though the AP said there was knock we couldn't ever hear it and the knock sensor on the Dyno was not picking it up. Id id some searching and i found this article by COBB.

    https://cobbtuning.zendesk.com/hc/en...ck-on-a-Subaru

  5. #4
    Registered User WrxNate's Avatar
    Join Date
    Aug 2013
    Location
    Milwaukee,WI
    Posts
    174
    That's what I was assuming, but yea I've been watching my AP and started to worry I was ignoring a real issue.

    Here's a log from today showing the blip of feedback knock. Usually it's only a 1.4. I usually notice it when I'm in second (as I am on the log) and either speeding up after having to go to a very low speed, or as I'm turning and starting to speed up.

    I was thinking of doing some auto-xing, so obviously seeing knock while turning has me worried about that.

    https://docs.google.com/spreadsheets...p=docslist_api

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself. We strongly suggest that you stay away from using aol, yahoo, msn, and hotmail accounts. Sometimes the mail server blocks the emails from our server. As a result you will not receive any notifications including the confirmation email.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Posting Permissions

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