Pull that 10a fuse out that the car was fine without until you determine what it was originally... Could have been there for AT stuff; but I don't know... Check your fuel pump fuse in the engine bay fuse box. See if it's blown. There are two kinds of Walbro 255s. One, the 'hp' uses less amperage than the standard Walbro 255...
http://www.autoperformanceengineerin...l/fpspecs.html