4.6L air intake box????????????????????
 

Check out my gallery under the homemade FIPK for ideas on what to put in it's place. The silencer is what the 90 degree pipe replaces in an FIPK.

-Kerry

I did that on my truck about a year ago, and I did not see a major difference. - it is also a pain to get the glued portion off the airbox. Not worth your trouble. I went on ebay and got a brand new K&N FIPK for 100 bucks, now that makes a difference you can feel. Good luck

I never had much trouble removing the glue, must have changed the type they use - not saying it was extremely easy, but it wasn't incredibly difficult.

As far as the performance difference... it changed when I swaped my intake silencer for a 3" exhaust 90. Outside of the "hi-flow" filter, that's the biggest change. When I first made my own I didn't have an oil impregnated gauze filter. Now I do... no real change then.

To each their own.

-Kerry

That is a good point that I did not think about. I already had a K&N stock filter replacement in there, maybe that is why I did not notice it.

The glue for me was a real pain. I ended up poking quite a few holes in the silencer to get it off (not that it mattered, but still not easy for me.

I built my own 180 degree, 3 " adapter for filter relocation to accommodate a narrow engine compartment. No fancy filter but stock ford crown vic. Works great and is very accessable.