This is the part where we need to say, "Your results may vary." Depending on the car and its current state of tune, you may get a large gain or a small one. We picked up a good gain in power, but you may end up getting a bit more or a bit less. In addition, since the programmer was stacked on top of the K&N filter install, the law of diminishing returns came into effect. Still, at 3,600 rpm we picked up 13.58 horsepower and over 20 lb-ft of torque. That's a pretty healthy gain for just pushing a few buttons!