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Thread: High Knock Retard Values, Mps 3 gen 2

  1. Default High Knock Retard Values, Mps 3 gen 2

    Hey

    I know its been questioned a lot before but i need to know if i have a bad issue and what it may be.

    Ive got a Gen2 Mazda 3 mps, always run 98 octane and recently got a cobb ap v3 with a stage 2 OTS tune, the car has autotech HPFP internals, DP, SRI and deleted mufflers.

    I am experiencing high levels of knock retard at WOT. Ill post my log to show.

    I still have stock spark plugs so would it help to change to colder ones ? What may be the cause. Im scared to go WOT just in case my car blows up.

    Thanks

    Just done a 2nd WOT in 3rd gear, looks alot better much lower KR. Do all the other values look ok ?
    Attached Files Attached Files
    Last edited by zwanny; 08-08-2015 at 07:04 PM.

  2. #2

    Default

    Could be shit fuel mate. Empty your fuel through driving and go fill up at BP or something away from your last fill. Thats my only advice without hearing or driving car..

  3. Default

    Yeah that could be it. I just filled it with a tank of 98 from Caltex. But im still worried.

  4. #4

    Default

    Whats with datalog2? It looks like a launch or something as you are WOT at 0 miles. Id guess it was false kr from your wheels spinning/hopping as it doesn't come back at all either later in that log or in your 3rd gear log. Is your car fully warmed too?

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