as stu has already pointed out, thats a certified killer
while i may not get this explanantion correct, it gos a litle somethng like this

your injectors can supply x amount of fuel
your pump can pump x amount of fuel
this is fine when you are doing normal acceleration runs as when you change gear and the revs drop, there is a littl ebit of time for the fuel rail to "fill up" again so that the the amount being taken out by the injectors is replensihed by the pump
when you go for total high speed runs, the pump eventually can't get enough fuel to the rail and so you lean out right where you want to be not leaning out, ie at the top of the rev range
and then this happens

sorry to try and tell those who have already figure out whats happened, but i'd like to think i had a bit of knowledge about stuff

looks like youwill be needing a new engine then mate