OK Guys, I know there are plenty of options out there for the 4.2L V6, if you've got one, let me know what you think & about how much $$$ your's ran.

Thanks!

 

I had a MAC kit (intake plenum and filter) on my 2000 model.
I thik it was about $140.
I never really noticed any change in performance or mpg. Maybe a little diff at real high rpm, but if there was any, it wasn't much.

I liked the filter; being able to wash, dry, re-oil, and re-use.

Some don't like them and think they don't do a good job.
I'm not one who believes that.

I bought a K&N oiled media filter for my 2005 and it too is doing a fine job - at least at 117,000 miles it seems to be.

 

Here's the one I'm looking @ getting. Does this look like a good deal?

http://www.autoanything.com/air-inta...0A1907277.aspx

And I've also heard that they can mess with the computer and screw things up. I'm not quite sure how it would do this, but that's what I was told.

 

Looks like that would work.
This is the one I had on my 2000
http://www.macperformance.com/store/...Product_ID=289

Regarding messing with the computer, check this thread if you haven't already:
https://www.ford-trucks.com/forums/6...it-or-not.html

 

I went ahead and ordered the AirAid. It's in, but I'm a little hesitant to put it in. If I do install it, and end up getting a check-engine light, will reinstalling the stock unit clear the light, or could it do permanent damage? I was told that with a new intake, more air is given to the engine (duh), and causes the air/fuel ratio to become unstable, and the engine could fail. Not something I want to go through.

 

I had an 2001 4.2 with a k&n Drop in magnaflow catback that i dumped inder the bed and a diablo delta chip.... Ran Great for what it was... check engine light was on for 2.5 years.