twducz1

I have heard some people say it's good, some say it's bad (as under hood temperatures rise it decreases performance) What does everyone think? And what is their favorite brand?

oldfloyd

I run an Airaid CAI.

JDubUB

Everyone has their own opinions. Not too sure with the Fords, but I have had my tuner on my last GM do dyno tests. Those tests showed anywhere from 2-5 HP on a stock tune. 6-12 HP on a custom tune and the best gains are when you have power adders with a custom tune. IMHO, $400 or even $200 is too much money for a couple of HP. They do however give an aggressive sound and look better under the hood. That still isn't enough justification for me.

jollyroger331

I put in a K&N series 57 fipk and gained at least 1 mpg not to mention when you need to put your foot in it , it sounds real nice. I got lucky and found mine on c.l. A week after I bought the truck it was brand new still in the box.

Carcrazygts2

I dont like them. i have engine mods and I'm still using the stock air intake, minus the silencer, and using the gotts mod. Even my with headers, cams, and a few other goodies, I saw a slight decrease when tuning the truck. Open air cleaners will pull in hot air even if it has a heat shield.