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2016+ Focus RS 2.3 Blow Off Valve

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Product Description

Installation Manual


*For USDM [MAP Tuned] Spec Vehicles*


No aftermarket tuning required. Will work on stock tune or aftermarket tunes.


This high performance VTA (vent to atmosphere) blow-off valve is precision machined out of aircraft grade billet aluminum. It features an internal brass piston design and is pressure tested to withstand up to 100psi, allowing it to compliment even the most aggressive turbo builds. Spring pre-load determines the pressure differential required across the piston before the BOV opens and releases the pressurized intake charge. Designed to be a replacement for the OEM bypass valve and is available in 4 different colors.


Installation is simple and all mounting hardware is included.



Available in your choice of color: Onyx Black, Royal Blue, Race Red, or Pure Aluminum



Exterior Sound Clip:


Interior Sound Clip:



Product Color Disclaimer
Due to variances in the anodizing stage of production that are beyond our control, actual color hue may be different than what is pictured and what has also been previously offered by Boomba Racing. We apologize for any inconvenience and we sincerely appreciate your understanding. For further clarification, feel free to contact us.


Product Videos

MK3 Focus RS Blow Off Valve / Bypass Valve Installation Video (01:47)
  • MK3 Focus RS B...
  • 2017 Focus RS ...
    I swapped out my TurboSmart dual port for this Boomba BOV 100%...
  • 2017 Focus RS ...
    Just a quick video to see what it sounds like with the windows...

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Product Reviews

  1. LOUD AF 5 Star Review

    Posted by on 1st Jun 2018

    If you want a BOV that rises above the rest then this is it. A great noise and an almost necessary replacement to the horrible little plastic shell that passes as a BOV from Ford.

  2. if looking for a loud blow off valve this the way to go 4 Star Review

    Posted by on 2nd May 2018

    Weight felt good seals where good paint was good but their was like white scratches I couldn't get off othern then that it has awesome sound its loud and easy to install

  3. They should call this the Animal runover Prevention. 5 Star Review

    Posted by on 6th Mar 2017

    Easy install, quality build, good anodizing, and as a side benefit makes pets/animals run like a giant hissing anaconda is coming to fucking eat them. I love the sound and so far is seems to perform really well.

  4. boomba bov 5 Star Review

    Posted by on 3rd Mar 2017

    had one in my 14 focus st and loved it and now have a 17 focus Rs so without hesitation i got another one for it. installed easy and got the sound i love back. thx boomba for another great product....

  5. PSSSSSSSHHHHHhhhhh!!!!!!!!! 5 Star Review

    Posted by on 24th Jan 2017

    If you are looking for 100% VTA and a solid built product that also looks great.

    I actually had a Turbosmart Kompact dual Port BOV installed and I just replaced with the Bommba and It's awesome. waaay louder than a dual port and obviously much louder than the stock valve.

    takes about 20 minutes to install. Just raise the right front of the vehicle slightly and remove the front passenger wheel, then it's very easy to access the vacuum line and the 3 Torqx-30 screws. takes about 5 minutes at this point to swap it out.
    video of the sound on my 2017

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