Get the AEM with the BPV.. you can get it polished as well. I think AEM knows there stuff more then Injen.. besides.. they put an AEM on the project Altima 3.5 right??M|22 said:AEM or Injen. Can't make up my mind... What do you guys recommend? I'm a n00b at cars, and own one screwdriver, so I would get someone else to do the install. Also need BPV just incase of sudden downpour in Houston.