I just installed my MAC CAI on my 08 SCREW 5.4 when I shut off the truck and I get a squeak out of it... does everyone have the same issue.

 

my AF1 does the same thing it's normal

 

I've got the 3 1/2 in how long till I get a check engine light IF I'm going to get one?
So far so good, sound like a monster, except for a lil rattle/vibration at WOT

 

From what I gather it is usually as the truck finishes it's drive cycles after re-hooking up the battery the 30 mile thing or whatever.

If you don't have a CEL yet, you are running very lean to say the least brother. You have an exhaust? Tune?

 

Why do you think you'll get one???? You transfered your MAF to your CAI kit right? All you are doing is allowing more cool air to be ingested into the engine; if you added a decent exhaust, you'll event gain more. A internal combustion engine is a air pump; if you want more air in, you have to compinsate to allow more air (exhaust) out.

Don't worry about setting any codes, provided you used a good CAI kit.