Yea. It's a an early evaportive emissions componet. When the truck is "cold" or
under 125*/135* temp, the flapper door will close access to the incoming air and allow
only heated air from the exhaust heat stove. This does help warm up the engine. The
other reason it's there is to help atomize the fuel. A lot easier for the combustion process
to occur if the fuel particles are atomized along with the air that is mixed with it. If this
process isn't done, the dropplets go out the exhaust in a partially combusted state which
results in HC's into the cat, {not good} and out into the air..

When cold, gas is mostly in dropplet form and hard to get into the "vapor" transistion
for good and complete combustion..Once the engine warms up to the temps the thermo
bulbs is set to inside the air cleaner, fresh air is allowed into the air cleaner and down the
intake. Since the combustion temps have risen to a state that the a/f can be combusted
all is good. In fact the temps rise so much, that the EGR comes into play to cut down
on cylinder temps that may reach over 2500* and cause NOx.

I don't believe since it's going into the summer months that the caddie mod
will cuase you much concern. During the cold months it will have an effect,
I suppose..

As far as inspections, it is an emissions componet. Out here in Ca a ride
would fail a smog test if it isn't present, the alum hose is missing, or
the heat stove down on the exhaust is missing..Tampered and missing
evaportive componets..I don't know how Texas would deal with it, but
it wouldn't be overlooked I doubt.

 

I had a tube like the one in pic 3; I junked it. I didn't notice any baffle like that in my airbox either...

It looks like your going to want that though....

 

On my truck, that baffle causes me stall outs sometimes when starting the truck. I put my cold air setup on and the stall outs go away :shrug: either way, its a piss poor excuse for anything (the stock setup)

 

No help in warm up is worth the numerous advantages to a cold air setup or even a free flowing filter gives.The stock breather setup is so restrictive that its worth doing away with.

 

I am in the same boat in a way as bmpwe, I did the old school looking air intake, (edelbrock covers, and K and N filter) but in pic 3, where the hose goes to the engine which I belive is call the hot stove, I put a breather there, now is this ok? can this in anyways hurt my engine, I think that I put over like 500 miles since I did it and no problem soo far, and also will I pass emissions?

 

I doubt you'd hurt anythng s10bear--I just left mine as an open hole, and I have had no issues. Although, now that you mentain it I may do something about it.

 

Though it's illegal, I left mine open as well. It won't pass a visual inspec at a smog station
or if pulled over and looked at. Now that I have headers, JBA sent this lil pipe with a bar
welded on it to clamp to a runner tube. This way you can hook up the heat stove tube..

And this too I don't have hooked up, but will have to pass smog.. I suppose one
could fab a small plate or cap to go over it and hold it down with a small clamp
tighened around it..

 

well.... the way I look at it is there will be hot air coming from that tube. If you don't have it connected to your intake, atleast manuver that pipe so the hot exhaust goes towards the ground and not your engine compartment.

~b