i know this may of been asked brfore but what spark plugs for a wrx sti version 1 and what gap im taking the car to work tomorrow to service but dont want to strip it out then have the hassle of getting them ,also do sti have a different air filter cheers carl

 

Won't go wrong with NGK PFR7B's and 0.7mm

 

not much help then

 

As above and the air filter is the same as the wrx

 

Genuine STi Grp A air filter is supposed to be really good, for about £40, and NGK PRF7B plugs are super for a mildly modified Scooby!