Ford AIS: Problem or not??

[Dirk]

I installed a new AIS system late last month. Quick and simple install. Last week I was checking my oil while filling up, I noticed the filter minder is already at 3/4 to the red. I took the filter out and looked at it.. still looks brand new. I reset the minder and went about my way. I checked it again this morning and it was all the way to change. I reset it and went to work and checked it again. This time it was at half way. When I left work today, I hit 20-25psi launching from a dead stop 5-10 times. When I got home, all the way to the red.


Is this normal?

[mschn99]

look at the spot behind where they do the zoodad...right where the snorkle comes through...

there was a piece of rubber there you needed to cut out...im guessing you didnt cut it enough or didnt cut it at all....this was only nessicary on the early 99's....

[Dirk]

I removed that during the install. I should have said that.

[mschn99]

ive honestly never heard of that happening.... make sure a bird or something didnt nest in that snorkle.....an air restriction (besides the filter) is about all that will cause that gauge to move if the gauge spring isnt bad....

[mschn99]

you arent over 400RWHP are ya?? if your drawing more air than the filter can flow it will peg faster.....if your at 350 you might always show half plugged with a clean filter...just a thought.....

[Dirk]

I have to remove the unit this weekend to get to the top of the engine properly and start the first part of my Frankenstein project. Or as my wife calls it, "garage full of truck crap that needs to go away".

[Dirk]

Originally Posted by Marc

you arent over 400RWHP are ya?? if your drawing more air than the filter can flow it will peg faster.....if your at 350 you might always show half plugged with a clean filter...just a thought.....

I can't confirm nor deny anything.

[Dirk]

The more I think about this, the more I hope there is a problem. I DO NOT want to go back to the tymar style setup. It was way too loud.

[mschn99]

the AIS will support 400RWHP...

as long as the gauge doesnt say 100% pegged your still getting sufficient street air flow (could cost you a small amount of HP on the dyno or track)

[strokin_early_99]

The filter minder on the AIS is very sensative. If you change it out with the stock filter minder you will see it will not move hardly at all.