the throttle body is the thing that controls the amount of air the engine takes in, It is located on top of the intake manifold and is attached to a black box (Engine Cover/hat) via flex hose with a hose clamp. To get to the throttle body you need to remove the flexible hoses on both sides of the hat and then remove both bolts on the bottom of the hat. Then just pull the thing off and the throttle body should be exposed.

 

Googling images always helps too

 

Cold air intakes hurt mileage at least mine did! Ask Hammer about them.

 

Are you sure about those numbers cause there is NO WAY just changing Intakes will do that for you unless your old one was totally clogged and could barely pull any air through it..

 

Actually, a poorly designed intake will help mileage, but at the same time rob you of HP and Torque. The better the CAI, the more performance but at the expense of fuel.

Poor designed intakes pull in a lot of hot air from the engine bay, more so than even the stock setup which almost always has an opening or channel in the air box to draw cooler air from under the truck or a wheel well. The resulting hot air will cause the PCM to lean the mix, meaning there is less fuel dumped and the A/F ration increases.
Loss fuel put into the mix, means that you are obviously going to see better gas mileage.

A true CAI, the Vararam is a good example, which draws huge volumes of cool air from the space between the upper and lower bumper. The colder air is more dense and causes the PCM to dump more fuel. This gives better power gains, but at a cost of burning more fuel. I'd buy a Vararam in a second, but the air intake points are where I'll often be pushing muddy, nasty water. Can't be risking no hydrolock for the sake of a few HP.

I love the guys who put the cheaper CAIs in that don't even come with a heat shield and draw the air from engine level who claim they get seat of the pants power increases & better gas mileage. True, you may see a modest mpg gain, but it's often offset by the fact you have to give more throttle to achieve the same acceleration. But there is no way power is gained, unless the laws of physics cease to exist in their trucks...

 

I must have a freak of nature truck...I am averaging about 21-23 mpg on the autobahn @100 kmh/60mph

 

That's not too out of line, the EPA rates the 4.7 in a 2WD Ram at 19 mpg highway. I was riding shotgun in a QC 4.7 4x2 last weekend going to play in a golf outing and the guy's truck averaged just a hair under 20 mpg on the round trip 'cross state and back and we WEREN'T doing any 60 mph on the interstate, 75 would be more like it, LOL... Bone stock, soccer mom'ish tires...

 

Cool...Tires are 265/70 17s....In order for me to get this truck, I had to promise the wifey that I was not going to play with it like I did my 'stang or my old B2300....German women....they just don't understand a man's way of life....sheesh! LOL!

 

Thats Awsome I Just picked up a 2003 Dodge durango I am clearly seeing Bad MPG but it is running ruough it needs probably need NGK Plugs maybe even some good Coils I will Look intoo the Spectra Flex Intake


I notice a lot of people say to get the CIA K&N I would Buy it if it helped more than the Spectre Flex but for $30 if you pick Any MPG Up your saving


I Joined this forum to get better MPG on my new durango



I Know one thing for sure if your going to ever do any towing dont use a gas vehicle at all



When I went to Pick this durango In Las Vegas NV from sandiego



My dad took His new 2007 dodge 3500 1 ton with the cummings its stock never been touched has great power we towed a empty car trailer weighed maybe 600 pounds.



from My Town of Ramona to Las Vegas Nevada Empty we only used Half of a Tank we got 20.1 MPG on AVG that the computer showed.


we Picked the Durango up loaded it on the trailer drove to Jean NV about 50 miles outside of Vegas and re filled up for $373 a gallon


Only took $77 in Gas


we did the Math drove 377 Miles and i think we got 18 gallons i dont rmember exactly but i did the Match at the Pump we Got 18.6 MPG



That was mostly Empty with 30 miles of towng



now with a full tank we went from Jean NV back to Ramona Ca only used 3/4 of a Tank AVG 14.6 MPG towing 6000 pounds