i just put one on and i notice a small difference, its only a 7 HP gain, but its every little bit that counts, if u plan on doing more performance stuff its recommnded plus your stock IM is shitty gasket probably isnt too good, and you'll get a cleaner better sounding intake suck, but idk i took my fuel injectors out and there was this plastic orange cover on the ends two of them chipped off a peice dont know if it hurt any but i dont notice a difference although not too worried cause i'm getting 290 fuel injectors