on the track the f8x struggles terribly putting the power down with its low end power band design from the factory - this will never change.. not at 444hp nor 1000hp.
I have a simple 91oct tune (GTS) and still out of the hole the traction light keeps flashing as I row through the gears while GT350s, vettes fly by me .. and this is with 305 200 TW tires on the rear.
If you're considering whether to spend 20k-30k upgrading your F80 to 700hp versus buying a g80 that can actually uses its 500hp properly.. please make the right choice