![I5 Cast Inlet Plenum [Mk2 Focus RS/ST] mudflaps With an IS38 turbocharger installed](https://cdn.shopify.com/s/files/1/0367/2621/files/2226-CAI-3.png?v=1684334824)
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With an IS38 turbocharger installed
improved engine response
smooth shifts
As used in all of our entry-level performance upgrade kits for the Mk7 Fiesta
I5 Cast Inlet Plenum [Mk2 Focus RS/ST] mudflaps With an IS38 turbocharger installedmountune's highly skilled engineers identified an obvious performance and aesthetical improvement to all I5 engines through the creation of an I5 cast inlet plenum. Extensive in house CAD and CFD work (by the same team responsible for producing mountune's BTCC, WTCC, WRC and Rallycross inlets) allowed an improvement to be made particularly around the port entrance to each inlet, as well as to increase the volume of the plenum itself to a more
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