They usually run out of resolution at or around 225rwkw ish.
I would very strongly suggest you stop leaning on the car until you get the Nistune and dyno the car. Although they usually run rich with more boost on stock ECU's, if you are hearing audible pinging in the car you are doing damage. What fuel pump?
Before you go on the dyno make sure you have all your exhaust mods sorted, fuel pump, injectors etc sorted.