i have the same issue, very strong fuel smell after just moderate acceleration, even just dailying i get fuel smell, running 8 pound, stock everything, apart from zorst, fmic and splitfires, my cat is new so its not the problem as mentioned above, the only thing i can put it down to is a fuel leak in the engine bay and a bad one at that, but i cant seem to find any issues in the lines anywhere and my fuel usage is normal, it has a new fuel filter and ive checked the lines to it to.
:S