Hey i live in SA i drive a 2002 Ford Focus ive done a free flow exhaust which is a performance exhaust i think you call it cat back? got a k and n flat pannel air filter and removed the air box resinator i plan to get branches or what you call headers to complete the exhaust sysem. and i am also looking at chips im trying to compare local stuff with international ones what chips have you used and what sort of gains did you get thanks