Return to mountune High Flow Air Filter Focus ST 2013-2018
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Mountune high flow air filter focus st January 11, 2019
Reviewer: Reynaldo Figueroa from San jose, CA United States  
Thank you mountune for making a performance air filter and makes the car sound beast. I love that you guys deliver the parts right away. I recommend anybody that wants a nice sound and performance air filter to check out mountune high flow air filter.

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Air filter December 27, 2018
Reviewer: Craig Knotts from Centerburg, Ohio USA  
World great. Went from 24-27 averaging miles to 27-31 . Plus you can hear the difference in intake air sound.

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Great first performance mod December 17, 2018
Reviewer: A. Gould from Newington, CT United States  
I did a  lot of research  and  Mountune didn't disappoint on quality and  engineering  very  happy with my  purchase.

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Much needed November 23, 2018
Reviewer: Zane Martinez from Watsonville, CA United States  
Air filter made didn't add a ton of power because it is just an air filter on a stock engine. It did add some power but it especially made the power more usable, smoother, and freer revving. it cleaned up the power delivery from idle to redline. Plus, who doesn't love hearing that turbo?

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Focus RS Air Filter November 23, 2018
Reviewer: Anonymous Person from White Plains, NY United States  
Excellent purchase. Install was easy, I can hear the difference in intake noises. very mild performance gains on an otherwise stock car. I haven't noticed any turbo whistle.

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October 26, 2018
Reviewer: Lane Hoeppner from Fort Wayne, IN United States  


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Easy install October 16, 2018
Reviewer: Steven Kamalsky from Austin, TX United States  
Easy install, love the extra woosh sound.

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good filter August 14, 2018
Reviewer: Andrew Jamieson from Chehalis, WA United States  
Good looking filter and performing filter, basically a K&N but with the cone top that also sucks in air. Overall its worth it

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Brilliant Air filter July 20, 2018
Reviewer: Craig from Tuart Hill , Wa Australia  
Brilliant air filter, love the sound release on it also and just an all round better filter than stock

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Filter July 16, 2018
Reviewer: Carlos Aranda from San jose, CA United States  
Great filter is to install

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