wandell?? Someone ???
OK, I'm new. Heres the story. I bought a 5.4 2005 Screw in June of 05. I installed a magnaflow SIDO and gained maybe 1/2 to 1 mpg. I was getting 16mpg commonly and 17 occassionally. Then in September I installed a Volant CAI with RAM scoop that enter at the tow hook. All of september and Otober I got 14mpg commonly.. never 15mpg and when I get on the throttle throughout the tank will get 12mpg. I thought the CAI was going to help the mpg. But my uncle said "Hey KISS..more air... more fuel". I've thought about diconecting my battery and having the computer relearn. Please help!! with mpg. Will an xcal or some chip help? Oh no! another $300.

 

more air in more fuel needed to keep the air fuel misture the same.. but since its cold season the engine will take advantage of the timing and fuel milage will go down...

 

Remember also that you are in the middle of winter so you will be running a special winter gas mix that will lower your mpg.

 

I realize that it's winter now. But
"All of september and Otober I got 14mpg commonly"
Then the temperature was not cold at all.

 

Not surprised at all. It's taking a while, but people are starting to realize these things are gimmicks. First thing I think of when people install a CAI is what was wrong with the stock CAI? Absolutely NOTHING on a stock motor. And "ramming" air in doesn't do a thing either.

 

I'm not so sure this is a gimmick. I did notice some real off the line and throttle response. I would still like to increase my mpg however. It also sounds great. Please don't tell me to put it away. :o

 

FX4 Guy what's a
"special winter gas mix that will lower your mpg"?

 

The oil company put in additives to keep gasoline from freezing make it less combustible!

 

learn something new everyday.. is this stuff like stabile... or something else.

 

How did you think you could get more power and mileage at the same time?
You most likely have upset the air metering thru the mass air sensor.
These new trucks have a high degree of engineering incorperated into the intake track and you come along and upset it.
The old days are gone!

 

The new 5.4's are very sensitive to air intake changes. You made the right choice with the volant because it is the most stock like intake, but improved flow. If you want to feel a real difference though get a tuner which will take advantage of the extra airflow and possibly improve gas mileage because it changed fuel curves, ratio, etc. Bone stock my truck always averaged 14 mpg mixed city/highway. With the Edge tuner it seems to be about 15 mpg.

 

flashpoint of gasoline is -97F....only if there is a high concentration of water in the fuel will it ever freeze unless your fuel tank and vehicle is in an atmosphere of -300F so if you are anywhere in which is gets from -97Fto -300F then u will have a problem with the gasoline in your engine freezing..

 

The mixed gas helps to reduce emissions during the winter months when vehicles are less efficient, and idle times are higher.

I don't know if they still do it up here in AK, but they used to use what was called oxygenated gasoline. There was a big stink about it when it first started because you could easily tell there was a power loss, MPG loss, and it smelled different. I'm not positive, but I believe this also had an effect on peoples snowmachines and many burned pistons where blamed on this stuff. I don't hear anything about it these days so that may have just been a nasty rumor to help get rid of it. I'll check the label on a pump when I get back to AK to see if they still say it's oxygenated.


Edit: Fasterf150 is right, there is no way you'd ever freeze gasoline with a naturally occuring temperature here on Earth. I don't know where people got that, but I've heard it before. It may stem from how diesel is susceptable to gelling in extreme cold, but I do believe there has been an additive to prevent that for some time now. And gas and water don't mix. Neither does diesel and water for that mater. Any freezing water in your tank would be solid water, at the bottom of your tank, or in the fuel lines.

 

Direct from their website and I quote

"A Volant Cool Air Intake
Allowing cooler air means
more O2 molecules per
charge, whick makes more
horsepower and fuel mileage"

 

Actually in Canada, they do add something to the gasoline during winter season. They call it Winter gas, here's what their websites say:

* Includes a de-icer that minimizes potential problems due to the possible presence of condensation in fuel tanks and lines during cold weather.
* Contains Tactrol*, our proprietary deposit control additive, designed to keep fuel systems clean.
* It evaporates more readily than summer gasoline for improved cold weather start-ups.

from http://retail.petro-canada.ca/en/formycar/141.aspx