Skip to content
View in the app

A better way to browse. Learn more.
Ford Owners Club - Ford Forums

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.



Join the Independent Ford Owners' Club

Our community has been built by enthusiasts, for enthusiasts, and proudly run by Ford owners' for over 18 years. As an independent, non-official club, everything you’ll find here, advice, support, and opinions, comes directly from members with genuine Ford ownership experience.

Join our friendly community... it's Free!

 

RS airbox on ST ?

Priceyy12
Priceyy12
in Ford Focus Club

Featured Replies

Anyone recommend putting the rs airbox or just the lid on the st and changing the airfilter ?

 

Failing that what else can I do to improve the sound a bit without spending to much ?

  • Quote


    RS airbox is the same as ST. Just the lid is different. 

    And please note that the RS lid is much higher and the rubber part touches the bonnet - some kind of heat shield so that the hot air from the engine will not be sucked inside.

    So i do not recommend making a hole into your existing one. But i am also not sure if it is possible to buy the RS lid, i think you have to buy the whole box as a set.

    I have this RS air box in mine 1.5Ecoboost and there is a sound improvement so at least i can confirm you that :) 

     

  • Quote

    I have the RS lid on my ST.

    Had to buy the whole airbox from Ford, but just used the lid.

    As Tomas said, don't just drill holes as the RS lid is designed to seal against the bonnet and only allow flow from the front of the car, to stop it sucking hot engine air in.

    It does sound a bit better from outside, but the Focus is so well insulated it makes no difference inside unless you have the windows down.

  • Quote

    • Latest Deals

    Ford UK Shop for genuine Ford parts & accessories

    Disclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via the club

    Join the conversation

    You can post now and register later. If you have an account, sign in now to post with your account.
    Note: Your post will require moderator approval before it will be visible.

    Guest
    Reply to this topic...
    Go to topic listing

    The "Digestive"

    • The Digestive Forum Roundup (31st May - 7th June 2026)

      Steve ·
      The Digestive Forum Roundup (31st May - 7th June 2026) We hope you’re all enjoying your week and finding time for some time enjoying your Ford! This week, our vibrant forum has been buzzing with discussions that touch on a diverse range of Ford models, from the Mondeo to the Fiesta and Focus. Here’s a recap of some key conversations that might pique your interest. Starting with the Mondeo, user Frenchspanner shared a particularly frustrating issue relating to a 'Immobiliser Active' message appea
      Steve
      Steve
      • 136 views





    Background Picker
    Customize Layout

    Account

    Navigation

    Search

    Search

    Configure browser push notifications
    Chrome (Android)
    1. Tap the lock icon next to the address bar.
    2. Tap Permissions → Notifications.
    3. Adjust your preference.
    Chrome (Desktop)
    1. Click the padlock icon in the address bar.
    2. Select Site settings.
    3. Find Notifications and adjust your preference.