The results from this tune will be 18 whp peak, 32 whp mid range, 45 wtq peak.
Intakes also are a waste of money and provide no gains while no air box provides no gains aswell. Headers and cat deletes also provide a loss in torque. This is why the only mod I did was a kn panel filter. The stock air box flows 700 hp on duramax before needing modification.