2018 stock filter vs K&N filter ?

2018 stock filter vs K&N filter ?

This is a discussion on 2018 stock filter vs K&N filter ? within the 2nd Gen F150 Ecoboost forums, part of the 2nd Gen F150 Ecoboost Forum (2015+) category; I have a stock truck and is the factory filter bad ? Would a K&N filter be better help gas mileage than the stock one ...

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Thread: 2018 stock filter vs K&N filter ?

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    Ecoboost Sr Member dwayne.surratt's Avatar

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    2018 stock filter vs K&N filter ?

    I have a stock truck and is the factory filter bad ? Would a K&N filter be better help gas mileage than the stock one ? I’m not going to do anything else to the truck


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    Ecoboost Master GearHead_1's Avatar

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    If you constantly drive the truck hard, changing to a K&N may yield positive results.
    A society willing to trade liberty for temporary security deserves neither and will lose both
    ΜΟΛΩΝ ΛΑΒΕ

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    Ecoboost Pro Mulyhuntr's Avatar

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    K&n does not filter as well as a paper filter. You will notice zero improvement in mileage and zero butt dyno improvement. The only improvement from a K&N will be accelerated wear on your motor due to it letting in the fine dust particles that the stock paper filter actually filters out.
    Last edited by Mulyhuntr; 12-13-2018 at 11:38 AM.
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    Ecoboost Sr Member dwayne.surratt's Avatar

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    I found this and I think I’ll replace it when it comes time




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    Ecoboost Pro Mitchf150's Avatar

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    If your goal is mpg's, not sure you'll be happy.. But, if you want 14 hp more at 7000 rpms, go for it!

    Good luck!

    Mitch
    Last edited by Mitchf150; 12-12-2018 at 11:10 PM.
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    2013 F150 SuperCab 4x4 XLT Max Tow 3.73 Egoboost. #7700 GVWR, #1920 payload. Bilstein 5100 shocks, PowerStop "Max Tow" brakes. Hellwig 2500 overload spings. 2003 Prowler Lynx 722F, #5000 GVWR and weighs every bit of it!

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    Ecoboost Veteran tvsjr's Avatar

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    However, that video only applies to the G37. The F150 filter is much larger, with a totally different airbox design. Is the G37 somewhat starved for air at WOT, whereas the F150 isn't, using the stock filter?

    Here's another video, done similarly, that claims 5hp and 3lb-ft, for a 90s F150:


    5hp/3lb-ft are well within the margin of error.

    And then you have the whole debate of filtration versus flow. You could remove the filter altogether and you'd get substantially better flow. But, I would be especially concerned about filtration with a turbocharged motor.
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    Super Moderator mwemaxxowner's Avatar
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    With a turbocharger pulling air in forcefully, I don't even think you'd see a substantial increase in flow then.

    Baaaaaaaaaaa
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    Ecoboost Sr Member dwayne.surratt's Avatar

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    I was going to wait till after the first oil change and dyno the truck just to see what hp it puts to the wheels. For less than 50.00 I can get a filter and see if it’s any power increase. You get 2 pulls on the dyno so I’ll know if I wasted another 50.00 or not


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    Ecoboost Veteran tvsjr's Avatar

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    Just remember, you can only test power... not filtration. Pull the filter entirely and the dyno will look even better! The engine just won't last very long.
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    Gold Supporting Member DBCooper's Avatar
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    Check out the AEM dry drop-in filter. It filters great and has no oil to mess with sensors
    ~Jim~
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