The problem seems to materialized more and more when Ingen changed the type of filters to non oiled or dry filters.
I used to run the early oiled filter version, And most people that did had very little issues with the maf sensors freaking out because of the moisture.
Now of course that doesn't take into account the people who basically drove thru a good sized puddle of water while raining.
Anyway the newer type filters are more prone to moisture issues, And so you will have some folks suffer from this like what it sound like here.
Luckily there seems to be no damage and the sensors and filters just needed some drying time.
For those with questions on how they fit? Here are some pics from member m4a1mustang's old Z install
If you notice they do sit kinda low, But most of the time they'll be fine unless you either run into a heavy storm, And drive thru good sized puddles.
Again I never had an issue with mine, But I wanted the most Hp so I changed over the Stillen Gen3's and have been happy ever since.
Nissan 370Z Forum - m4a1mustang's Album: Injen Long-Tube Intake Install