if its 280 hp then that is awesome but in gear on the move a proper 400hp 400 lbft should destroy it. the mid range torque will be wank on the xe it must be, nowhere near 400 lbft anyways.

im not disputing it must go well though, ive been in a tuned xe astra around 180 hp and that was no slouch

and no 900 hp hasnt gone to my head, its just imo the cos must be down on power as it should win if it grips with the massive mid range torque.