Hello I own a 2013 Chevrolet Impala and was looking into the trifecta tune for my car. I was on there website and was talking to one of there guys on there regarding doing the tune along with other modifications to the impala. As of right now the car is all stock, I was looking at getting the k&n typhoon air intake and having a shop build a catback exhaust system. There member at trifecta said that with the tune you won't get any other gains with those other bolt on's that the trifecta tune pretty much delets those gains. But you will get minor gains on the factory Chevrolet tune with the air intake and exhaust. How come you don't get these gains plus the gains of the trifecta tune also. He also said that with the tune alone I should see 30hp and 35 tq gain at the crank with the trifecta tune .