maybe one of those injectors where. bad. try swapping one of them out for another one. if problem continues. check ground to the injectors.. and lastly dizzy.
dumping a bunch of fuel. meaning could be a mest up injector.. or fuel pressure. bt it would also happen on normal acceleration. i dont beleive is dat.
having same issue. i swapped to a walbro.. and dropped some fuel system cleaner.. also idk if this happens to you gas as well. but when u tap and i really mean tap the gas. rpms go down b4 going up?