deco c

hows it going,getting my car mapped this weekend and am going to be fitting a walbro 255 before hand..i done a search already trying to look for advice as im no mechanic..does anyone know where il find a decent guide in fitting one as the info ive got from searches seems quite vague.or has anyone first hand info in fitting one themselves..i just want to make sure the job is done proper without breaking anything as im a bit limited on time until the map..the car is a 99sti by the way..

thanks in advance..

deco..