After moaning none stop about geting rid of my old subaru for a evo, im back in a black 2006 hawkeye sti 2.5 and i cant wipe the smile of my face! I want to get a new exhaust i was thinking about a full de-cat from Mercat,would i need to change the fuel pump as well,i will change the plugs to the colder ones grade 7 i think (does any one have the part no for the ngk ones for a 2.5 and are these any good?)It has a k&n typhoon induction kit,Should i leave this on or fit the airbox and put a panel fillter in. also a A/forrest re-map, some defi gauges,front splliter mud flaps and poss lower it.The car has ment to be chiped by a company called www.powerchipit.com i have paper work for this but the guy i bought it from doesnt no much about it he just asked for the car to be chiped and he got a certificate of installation thats it so im unsure if its chiped or re mapped mabey neither.also the car is a Euro import in case that makes any diffrence to any of the answers or advice yous give me thanks Sean