what I mean by power is that the car feel more lively? like can overtake faster sort of thing? basically I do not know what is the different or how to differentiate with more Power or throttle response effect given this kind of device installed in our car. Better throttle response mean more power, no? Mind to explain to me in lay man term? 

How I came across this product is due to my friend have it fixed in his Lancer 2.0 and yesterday he fetch me to lunch. He set something on the Potent Booster device and I can feel the difference (before setting and after) in terms of power when he pickup. I never sit in a Lancer before so maybe what I feel is not much of the effect from the device but just my own imagination haha
I heard the price of this device is not cheap, around RM700. But if one device can already make your car more "powerful", isn't that better than upgrading/changing multiple component in our car? Just my opinion la