Dyno Proven: Clean and simple, NUMBERS talk! Injen has put in the time and diligence to stand behind our performance data. We put in the time to test and prove that we have developed a superior kit for your 2019-2023 GM Truck or SUV. After hours of designing and dyno testing, Injen is proud to say that the EVO7104 Evolution Air Intake system puts down numbers of up to 13 additional horsepower and 14 Ft.-lbs. of torque.