difference between stage 1, 2, 3 Cold air intake?
ok well stage 1 is just filter and cone.now stage two is all stage 1 plus it has holes for your sensors and other vaccume lines but its still a short ram meaning it gets air from inside your engine bay. now the stage 3 has more pipes longer has sensor holes and vaccum lines but it gets its air from the front of the car which when your driving is much colder than the air in your engine bay.
