segen77

This may be a strange question, but have you ever looked at the stock intake on the 5.4? There's about 5 extra plastic cavities (or boxes) that hang off the main pipe. One of them even has 5.4 printed on it. It looks really strange, but I'm sure serves some kind of purpose. Anyone know what that purpose is?

JHH483

They're special chambers that reduce sound in the cabin.

SFCFX4

It's just extra baffling to keep the noise of air rushing through the intake down in the cabin.

segen77

alright. That sounds as good as anything I could have come up with.

The guy at the oil change place said it was just the designers wanting to fill up the extra space. lol

JHH483

Hahaha nope, they're resonators. All I can remember about the official name is that it starts with an H. H_____ Chambers, I believe.

jetmechG550

I hope you watched him as he changed your oil

iamsuperbleeder

they just put oil in the engine to take up the extra space in there too

BassAckwards

Lol! If thats what they are they dont work, the first few seconds of driving the truck and when I take off from a dead stop pullin my trailor I can hear it quite well sucking in the air.

bajaman

Makes for one damned ugly looking engine though....don't you think? Pretty tacky looking, like crap was just added on by a kindergarten kid.....lol!

warren pearson

Has anyone tried removing the extra boxes on the intake? What happened if you did? Does a cold air intake syatem (without the extra boxes) still have loud intake noises?

There also seems to be an unfiltered intake in the intake pipe that is located right over the center of the motor down stream from the filter and just before the first box that has "5.4" on the side. Does this really intake unfiltered air?