I know this is a post from years ago, but its the same concept that I use in my SHOs. The air in the engine bay can get hot negating the effect of having a cold air intake. Since you want cold air and not hot air you want to pull air from the fender. In truth, since the Supra is a turbo-ed car. The air is going to be compressed and ran through a cooler, you wouldnt see a big improvement unless on a naturally aspirated supra. Also reason why I'm on here is I'm getting a supra soon so I'm learning as much about the car as I can. So please criticize me if I'm wrong, I'm new to the car.
