Fiesta MK8 ST-Line dual air feedThe fiesta ST Line comes with an air feed for the airbox that only has a single feed and is quite thin. This will restrict the amount of air able to be passed to the air filter and subsequently to the turbo. Adding a dual feed allows more air to flow into the filter. Please note this will not connect onto the original ST Line airbox and is for use only for aftermarket heat shields or ST airbox.
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