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Thread: Misfires at WOT Bimmerlife and N20 Plugs

  1. #1
    Join Date
    May 2017
    Location
    New York
    Posts
    5
    My Cars
    2010 335i Xdrive Sport

    Misfires at WOT Bimmerlife and N20 Plugs

    ey guys, I'm completely confused with this.

    I have bimmerlife coils with the stage 2+ MHD tune
    Full Bolt on upgrades.
    Upgraded dynamic autoworx 1300 HP rated turbos
    Currently running 20 pounds of boost

    I recently tried installing the N20 2 step colder plugs at the same time as I installed the bimmerlife coils. I'm getting cylinder 6 misfires even after swapping plugs and coils. The plugs (NGK 97506) were first gapped to .020 as BMS recommended but it was idling rough, bumped it down to .018 and idle is great but WOT gets misfire cylinder 6. It does randomly give me other cylinders as well but may once every 10 misfire codes. Also seeing shadow codes for super knocking in cylinders 1, 3 and 6. The plugs have just under 3,000 miles on them. The car is running somewhere around 600HP. Should i try the n54 or 1 step colder plugs?

    I'm trying to attach the MHD logs as well which include when a misfire happened but Excel and CSV files are not supported here? Any help would be greatly appreciated.

  2. #2
    dworthy's Avatar
    dworthy is offline Wagon meister :) BMW Tech Expert
    Join Date
    Nov 2010
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    Grafenwoehr, Germany
    Posts
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    My Cars
    16 220i 05 325it 05 M3
    Have you tried to close the gap by .001 - .002, as you can be getting the plugs "blown out" at the higher rpm. Yes I know how much of a PITA it is to get to the plugs to try this unless you have most of the covers and cabin air intakes off.

    P.S. you will need 10 or more posts before the forum will allow you to upload here, but if you have a google drive, ect, just link it.
    Darin
    Current:
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