theville89

i know this gets old but my grandpa has a 07 fx2 and he is wanting a CAI. i have a k&n fipk on my 2000 and love it and thats what i recommended to him but he recently read Troyers page about the AF1 and airaid. and he is now concerned about the truck running lean with K&N. i have told him what yall think of the AF1 since alot of yall have it but he doesnt want that one b/c 1 its crome and 2 its too much $. so he is leaning towards airaid b/c of the more hp it claims, better look, price tag, and that it will not make the truck run lean compared to k&N. i have heard good things about them but i have heard more about k&n. b/c of that he is now on the fence.

i will like to hear just a few pros/cons, recommendations/complaints or whatever so i can relay the message cause he keeps asking me stuff about them and he wants to order one soon. thanks alot guys!

Kevin O.

I put the K&N FIPK on my 93' about a month ago and i have absolutely nothing bad to say about it. I could afford it, i bolted right up, it shipped quick and wasn't missing any parts, i can really feel the difference it made driving, It looks alot cleaner under the hood rather than the oversized stock intake, And plus it sounds a lot better. It''s been nothing but good to me.

SinCityFX4

https://www.f150forum.com/f7/cold-air-intake-9159/
Everyone breaks it down real nice here..

blackbetty

honestly all intakes should lean out the truck some as more air is going to change your a/f ratio, there by leaning out the truck and giving you the extra power. these trucks come rich from the dealer floor, and a slight leaning isnt anything to worry about, thats why a 3 inch af1 isnt going to require a tune, but a 3.5 will...however all intakes should be tuned for to provide max performance

theville89

that helps explain the lean thing. but when you say all intakes should be tuned what do you mean, are you talking about getting a tuner or what. i dont know anything about tuning. if you can explain to me what your talking about.

thanks

blackbetty

to achive the max performance out of anything you do to your truck, tuning will help, for an intake it may change what the computer sees for certain values in the pcm and may try to compensate by dumping in extra fuel for example or whatever crazy calculations it takes to correct the "extra air"

NGM

So far every factoy vehicle we have dynoed has never been rich from the factory. It has been lean. They do that for emissions. Since they are lean that is why putting any CAI need a tune. The 3.5 might set a CEL but the 3.0 is just on the verge of setting one.

blackbetty

im sorry, ngm i was reading on a few other post that people were rich from the factory but im going to take your word over a few random post on the other forum, i didnt realize. what a/f are you seeing stock?

SinCityFX4

When I look up the different CAI's. They dont specify 3 or 3.5. ID AF1 the only one that has thre 3.5??

NGM

Mine got as high as 15.1 usually 14.1ish
I can't remember which one has a 3 or 3.5 inlet. I think its the AF3, but I could be wrong.