Helmholtz Resonator

[chi]

Anyone made one of these for their FiST? Curious as to placement options.

 

[ron@whoosh]

Anyone made one of these for their FiST? Curious as to placement options.

The cp-e exhaust has one
see pics here

https://whoosh-motorsports.myshopify.com/collections/2014-2017-ford-fiesta-st/products/copy-of-cp-e-ford-fiesta-st-nexus-3-cat-back-exhaust-group-buy

 

[M-Sport fan]

The Thermal system does as well, it's just contained inside the muffler.