Do the deckplate mod and get an Amsoil foam or stock paper filter. It will cost you about 50 bucks including the filter and will give you just as much or more power than the Injen. Don't believe the 12 HP either. It won't happen with the 3.4NorCal4life21 said:hey i have been looking on truckperformance.com and i found an Injen intake, giving gain up to 12 HP. I have a 3.4L, will it give me gain or not?