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.
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This fixed the annoying drone sound in my car
Product is high quality and installation was very straight forward.
The quality is great, it’s simply two plugs and a zip tie, but they’re well made. The location and use of glue on the clamp you have to remove below the symposer makes the install pretty tough. I pulled the symposer towards the front of the car where it is “clipped” in with a large panel popper type fastener that is attached to the symposer and twisted it to get at the clamp better. The ears are far apart so my pliers barely fit over. I would recommend a pair of long, 90 bent pliers to get at the clamp. Other than that, the kit has worked great. The growling is gone and all you can hear is turbo noise and natural engine noise.
Pain in the neck to get the hose clamp off. Once it's off the rest is easy
Great quality of the product.
I wasn't happy with the black plug in the hose and the hose just useless hanging around in the enginebay. So I decided to undo the hole hose. I had to undo the battery, because the hose leads behind the battery to the fusebox. Now it looks way better.
I didn't expect to feel too much of a difference, but the engine has way less lag and I don't miss the sound at all, because now you can hear more of the turbocharger. Absolutley love the red colour combine with the engineby dress up.
This took like 30 seconds to do after 15 minutes of trying to get the hose clamp off without hose clamp pliers lol, definitely get a pair! I was immediately surprised at how much less noise their was in the cabin. The noise it made was actually pretty throaty and didn’t sound bad, but I hated that it wasn’t real. I can hear the turbo more but the 1.6 motor is a quiet one.
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.