The only drawback is the factory inlet tube from airbox to the turbo itself, that is where ETS comes in to save the day. This kit replaces a 100% of the factory inlet tube and converts the filter from 2.5" to 3.0" for even better flow. This is the ONLY intake modification you should be making on your Focus RS!
*Direct Bolt On
*Full 3.0" Design
*Utilizes Factory Airbox
*High Flow ETS Filter
*Wrinkle Black Powder Coat Finish
*Fits with factory engine cover