Cosworth headers are not CARB certified. Only their CAI is for 2003-2004 Focuses. Furthermore, you will likely trigger a CEL because of the missing catalytic converter. You can run a tune or do the mechanical CEL fix to eliminate it, but you will fail visual inspection regardless.
I also suggest the Exedy stage 1 based upon your needs. The hyper single is way overkill.
2015 Honda Fit LX 6 spd, stock
2015 Porsche Cayman S w/ mods..
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