Results 1 to 3 of 3

Thread: 2015 coyote positive knock help

  1. #1

    2015 coyote positive knock help

    Ok guys, I'm a little stumped here. My car sometimes gets positive Knock (2-4 degrees) between 2000-3000 rpm at .55- .85 load. The reason I'm stumped is because the spark advance the car is ending up with is always at or above what I'm commanding in the borderline tables and sometime at or above my mbt tables. It's almost always the same mapped points (7,8,20,21,25).

    Does anybody have any ideas where I need to look? I was under the impression that the spark advance shouldn't go above the MBT tables but it does on many occasions.

  2. #2
    Senior Tuner Higgs Boson's Avatar
    Join Date
    Mar 2010
    Location
    Texas Hill Country
    Posts
    3,299
    There are MBT modifiers tables right? I would have a look at all the tables to the right of the MBT tables.

    In the Retard tab you also have a table for an Add limit and a Remove limit.

  3. #3
    Well I feel stupid. My I decreased my IAT and ECT base tables for colder temps and it went away.