People often "FEEL" that the part they just paid good money for and installed on their car has increased "response" (not verifiable) and in general will attest to the part "working". This isn't new, manufactures' have done it as well. Pontiac was one of the first when they touted their "RAM AIR HOOD" on the GTO. Road & Track debunked that one 40 years ago, when they disconnected the damn intakes from the hood and ran the car without ANY intake and picked up a tenth in the quarter mile. They then ran the car with the ram air hooked up and then again with a very restrictive non forced air intake. The car ran the same with the restrictive intake as with the ram air hood. I would suggest you not take my word for it, just go to your local dragway and run with and without your hop up part.You will discover that changing filters and tubing make look good and they may make you "FEEL" like you gained something but you just don't. I have said this many times here but, its true whether you think so or not, A VERY WELL ENGINEERED AIR INTAKE WILL NOT GIVE MORE THAN 2% HP BACK. That means max 6HP at the wheels on a 300 HP car. For those of you thinking ram air will do lots more, it doesn't do anything below a 100 MPH. So unless you race or drive on the autobahn, you won't gain anything there either.By the way, you can find out how much you can "GAIN with an air intake, by running without it. Cooler outside air is slightly denser than underhood air, but not enough to matter.