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  1. #1
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    CEL after installing a drop in K&N air filter

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    About a week and a half ago I installed a drop in K&N air filter. After driving it a few times I noticed a CEL. I went back and checked the screws in the airbox and they are all tight. The car runs real smooth after installing it in also so what gives?
    2016 Kona Blue ST Nav, smoked wheels, 5% tint all around
    bone stock , daily grinder

    2011 GT500 Vert
    Grabber Blue
    Garage Queen

    2003 Cobra (sold)

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    Check to see if you may accidentally tugged, disconnected or loosened any vacuum lines during install.

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    Other cars have had problems with K&N oiled filters from having excess oil migrate onto inlet sensors and screwing them up. One case I know of, factory warranty was denied because it was a fault from a non OEM component. Not a Ford though -- your problem could be different.

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    Member 30 Rep Points kevinatfms's Avatar
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    Need the code to know where to start looking. Get it scanned and post the code up.
    FORD CERTIFIED TECHNICIAN 2004-2011
    KIA/HYUNDAI GDS4 TECHNICIAN 2004-2007


    15 Fiesta ST Oxford White
    K&N Filter, CPE RMM, Depo FMIC, Stratified 93 Tune

  5. #5
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    Not saying this has anything to do with it, but we really need an AEM dry-flo panel filter option.
    2016 base model

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    I'm gonna get her scanned. I read up on K&Ns website where it says some vehicles might have a CEL come on due to more air coming in and the computer has to relearn the air flow. And supposedly it will go away after 20 to 30 cold engine start ups. Don't know if that's true or not.
    2016 Kona Blue ST Nav, smoked wheels, 5% tint all around
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  7. #7
    Staff Team Staff Team 812 Rep Points CanadianGuy's Avatar
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    Btw check the connector for the mag sensor making sure the latch is locked. And for those looking for a dry filter ramair has a foam dry filter and mountune a panel filter is considered an dry filter.

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    Quote Originally Posted by CanadianGuy View Post
    Btw check the connector for the mag sensor making sure the latch is locked. And for those looking for a dry filter ramair has a foam dry filter and mountune a panel filter is considered an dry filter.
    So mountune's filter is a dry filter?
    2016 base model

  9. #9
    Staff Team Staff Team 812 Rep Points CanadianGuy's Avatar
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    Quote Originally Posted by Truth in Ruin View Post
    So mountune's filter is a dry filter?
    As per the last line in the features.
    http://www.mountuneusa.com/mountune-...2364-af-aa.htm
    Performance: DHM factory fitment IC, GFB DV+, Denso ITV22 sparks Mountune: RMM, MP215, Boost hose kit, Intercooler Charge Pipe, induction hose, CatBack, Strut brace and lower frame brace
    Function: No-pistons dead pedal, pedal spacer, battery tie down and evap skid plate, Mishimoto OCC, 4mm skid plate, autodiming mirror, Husky weatherbeater mats, Rally Armor mud flaps, Cobb exhaust hangers, Boomba Ultimate shift kit
    Appearance: Tint, Mountune Spoiler extension and splitter, Orange Shift knob, Diode Dynamic fog lights, Xenon depot LED H11 bulbs, Fiesta illuminated sill plates, LED interior lighting

    My build: http://www.fiestastforum.com/forum/t...daily-fun-ride

  10. #10
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    Guest-only advertisement. Register or Log In now!
    I have the Mountune air filter and no CEL so far after about couple months use and nearly 10k miles. No other engine mods though and mine was not oiled.

    Sent from my LG-H918 using Tapatalk


 
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