Basis of air intake turned to the right or left side?

Why are most of the air intakes turned facing the drive side. Only a very few are turned facing the passenger side. On this very site at "Texas Performance Concepts" under customer cars - 1987 951 Turbo "We installed a 2000 Corvette LS1 w/28k miles. Currently has 1500 trouble free miles on it since the conversion." the air intake is turned facing the passenger side. Why?

Well, you can either cut out the hood catch and install hood pins to run the intake straight, or you must curve it one way or the other. That and you may have to delete the pop up headlights to go straight as well. The driver's side has more room (passenger side has headlight motor) and can allow a "straight path" before the air hits the MAF. You really aren't supposed to run a filter right in front of the MAF, but the Chevy setup seems to handle whatever quite well. It's probably the additional calculations with the MAP sensor that help fine tune the proper reading of air.

To be honest, it really doesn't matter which direction you go. It's solely based on personal preference and fitment.

I install them as needed, each car seams to be a little different. The one that is on the passenger side , the car has all the pollution control stuff in it and there was no room to the drivers side.