Hi Guys
Would like to give my 4.6 liter engine a little more spunk.Im interested in a cold air intake for my 05 F150 STX.Are they hard to install?Do I have to do anything else to engine,drivetrain or just install&forget it?Ty,Pete

 

they aren't hard to install at all. If you looking to get alot more power you may want to get a tuner and exhaust change. But yes you can just change the intake and let it be.

 

I installed a CAI prior to having my cat-back system installed....
it was pretty easy to install and tool less than an hour...
While yes, you could probably run just that... the exhaust will open the whole thing up and should be at least your #2 mod if not your #1 mod.

I ran with CAI for a couple of days prior to exhaust...
I guess I could tell a difference performance wise.... but one thing I could definitely hear was a lot of intake roar when I'd get on it...

with the exhaust and CAI installed, it balances out the sound and I can feel improvement... but the one thing I can tell with these installed... I love the way my truck sounds now...
It's perfect!!!!!!!!!!!!!!

 

About as hard as doing a search on "CAI" or Cold air intake" or "intake".....if you can do that and read the hundreds of threads, then you can install one.