10% short term fuel trim on bank 1 when revving

[Kit2523]

Hello friends,
I am getting 10% short term fuel trim on bank 1 only when revving in park.
The truck is 2 years old with 60k miles. What do you guys think this could be?

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[AlpineBike]

Do you have a fresh air filter installed?

Mentioning what truck/engine you have might be helpful as well…

 

[Kit2523]

Do you have a fresh air filter installed?

Mentioning what truck/engine you have might be helpful as well…

Ranger Raptor 3.0L Ecoboost everything is as stock as a rock.

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