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.
The block–off plates are available in Natural aluminum as well as black, red or blue anodized.
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.
Videos Hide Videos Show Videos
27 Reviews Hide Reviews Show Reviews
Great quality. Everything fit both ends perfectly and installation was a breeze. Really quieted down the cabin.
I got this rather than a cheaper plastic plug or making one on my own just due to the finish of their products. Even for an aluminum plug it feels good in hand and it has an adapter that can be used for a boost guage in the future if you want. Super easy install unless the clamps are against the engine from the factory like mine were. I've bought half of Boomba's catalog for my ST and have been impressed each and Everytime with the products I've received
Great product !One of the only ones that comes with the firewall side hose cap. Quiets down the interior noise a lot.
Enjoy hearing the engine and no amplified noise.
Recommend adding an addendum to the YouTube Video that is you are unable to remove the sound imposer from the rubber hose even after removing the clamp, just use a box knife to cut the hose just below the imposer.
Very nice kit. Easy to install and looks great. No more droning on the interstate and I am very satisfied with this product. Will be looking at more Boomba products in the future
i now have piece and quiet, nice product. i would recommend getting the hose clamp tool as i used vise grips but its well worth the effort.
Simple install that makes a huge difference! No more excessive cabin noise which makes for a much more pleasant driving experience. Love the way it looks too.
Can you not stand that awful drone when pressing on the go pedal? I couldn't either. Why did Ford try and be like BMW, plumbing sound into the cabin? We'll never know.
The kit was easy to install. I did it in the dark in all of 10 minutes. And no more terrible drone!
Installed a catless downpipe earlier in the year and ever since, the noise through the factory symposer has been god awful and at some times almost unbearable. Installed the symposer delete this past Friday and besides the factory hose clamp being installed where I needed an actual hose clamp tool to get to it, install was easy and took less than five minutes. Almost immediately I noticed that while I was hearing more noise from the exhaust and the Boomba BOV spacer, there was no longer that annoying gurgling present under light throttle at times. For $40 and less than a 5 minute install, this symposer delete was worth the time and money spent.