Originally Posted by LateralG'z

I am betting they make a justifiable difference if you run the car at a track where the engine bay is hotter than normal driving conditions and they are actually pulling colder out from in the front of the car instead of in the engine bay. Basing things from a dyno is only a small part in the initial performance gains while getting things tuned to help have the motor run at better conditions because everything there is suppose to be in near perfect conditions. Not to mention a fan blowing air at 15 mph is not same as the car moving faster than 15 mph. A fan to keep the car from over heating from a 15 second pull is not a great test to base off of for intakes. If you do a couple of consecutive pulls, you will watch the horse go down as car generate heats. Add these long intakes and I bet you see better gains than stock ones once the car is a more severe condition than perfect dyno temps. I know you can prove that and are aware of it F.I. Inc. and I know it is true because I was an intern for Dynojet in Belgrade, MT when I was in college in Bozeman. I have seen more than a enough dyno runs and pulls and data to say if you run the car for more than 60 seconds hard and get the car hot that any sort of descent CAI that can bring in colder air to the engine helps teh performance. Thus the point of an intercooler on a S/C or Turbo set-up. Kind of common sense if anyone thinks about it, and yes the stock intakes are great for OEM but things can always be better than OEM to help squeeze extra juice out of NA motor.