D15B2, CAI o STOCK?

what do you think about this? Engine all stock, only exhaust system.
Many people tell me it's better stock air intake, but really do not know, I sometimes notice that the car is better with CAI.
Regards!
Sorry my english.
Many people tell me it's better stock air intake, but really do not know, I sometimes notice that the car is better with CAI.
Regards!
Sorry my english.
