That's wheel hp. If you add 25-30hp of parasitic loss that's more like 240hp...Less Hp than declared?
Only 215 instead of 220?
Are you sure this is the dyno from a Elise SC? This is more power than the ExigeS makes (usually around 200-205rwhp).
CharlieX tested a Cup255 at 225rwhp. Of course, different dynos, different days etc.