Which is why i said slight pick up. It's definitely not a "Placebo" affect, I've got enough experience with vehicle feedback to know the difference. When you're driving on the same roads, same environments day in day out, I can tell between the intake and exhaust it's running a bit better. As for the cold air part, It actually has a boarder between the engine and filter with a seal that goes around the hood to form a seal area away from the engine heat, therefore pulling cooler air from underneath. Plus with the plastic tube Vs a metal tube the air doesn't heat up as fast.