Boomba Racing Sound Symposer Delete | 2014-2017 Ford Fiesta ST (026-00-008B)

Boomba Racing Inc.
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Sound Symposer Delete

This direct bolt-on kit deletes and blocks the sound symposer from your 14+ Fiesta ST, cutting off the artificial drone noises being directed into the car's cabin, instead allowing you to hear your engine and exhaust tones as they should be. Included is this kit are an aluminum block-off plate and a Delrin hose plug, both of which are precision CNC machined from high quality material with laser engraved Boomba logos.

The block off plate features a threaded 1/4 NPT port and plug, allowing for allowing the end user to connect whatever aftermarket accessories they desire, such as our in-development catch can. This kit is also must-have for those higher horse power builds, where the increased boost levels could break the internal diaphragm of the OEM symposer components and cause boost leaks. Installation is simple and as well as completely reversible.


  • 1/4 NPT port plug
  • Prevent boost leaks on high-horsepower applications
  • Simple Installation


  • 2014-2017 Ford Fiesta ST

What's In The Box?

  • Aluminum block-off plate
  • Delrin hose plug

Customer Reviews

Based on 6 reviews
Kyle Hass

On time works great. Awesome little mod


Seems to be a good quality product. I have an after market exhaust so I can’t tell much difference inside the car.

Josh Smith
Does exactly what's advertised.

Easiest install I've ever done. Literally took 10 minutes. Would've been shorter if my hose clamp wasn't broken. If you don't like the noise, don't hesitate to get this thing it's great.

Brian Winer
Sound Symposer delete set

I haven't installed the kit yet, but it does seem like a good quality set. Having the plug for the flexible hose to the firewall seems to be something that some of the competition does not offer..and I appreciate, as I may want to re install the sound symposer at some time in the future... Also, the price was good, and the shipping fast and with no damage to the kit.

Michael Flynn
Excellent piece

Does exactly what it says what else can I say