This is common sense...A colder/cooler intake air temp is better. In most cases, you may not see a hp increase, however you will probably notice that your engine Performs better. Maybe you notice slightly better throttle response. Maybe your engine runs smoother. Maybe the "Pants" tell you it made an improvement. Anyone with common knowledge of engine performance knows that this is a beneficial modification, regardless of induction, whether forced or n/a. If you do not agree with/beleive this, then that's ok. YOU(those who disagree) are the one(s) losing out. I beleive that every little bit makes a difference, especially when you have more modifications. I am running a hahn FMIC, and I still use a CAI on my turbo. COLDER IS BETTER! For those of you who matter,(TERRY) please correct me if im wrong. For the rest, have a nice day.