im not too familar with this, so whats the difference between air to air and water to air? which is better? im planning on putting one on my lt1 but i see different things and dont know what to get.

 

a2w is better for track use because you can refill the intercooler with ice between each run and will keep a lower IAT in general then the a2a.

a2a is better for street use because otherwise "typically" you will heat soak and can not change ice while driving.

 

sounds logical