Hah... our mileage is about to drop for re-formulated winter gas crap is coming.

Expect a 2-3 mpg drop.

264 i/e. average 250 - 280 a tank. I think my stock injectors are keeping my mpg in check.

 

i get about 240-270 miles per tank, i dont drive in high boost that much though. The times when i do do alot of spirited driving i tend to see about 200 miles to the tank staying in boost alot. I have the 272's. my mileage increased slightly with the addition of cams and a flash together.

 

what do you mean winter gas?? I never heard of that or had any problems with lower gas mileage on my other cars in the winter. I don't plan on driving my EVO in the winter anyways, but I'd like to know a little more on what you mean.

 

What's the setting?

 

^ That is what I was thinking.

 

WORKS 269 cams with P2/boost flash. 220-235 per tank-spirited driving...

 

http://www.zhome.com/ZCMnL/PICS/wint...winterGas.html

 

+2/0

 

i get at least 275 every tank before the light comes on , i dont have cams though i do have a vta hks bov which will be recirculated soon, ill check to see if theres a difference.

 

Stock cams = 17 mpg, HKS 272/272 cams = 19-20 mpg (both mixed)

 

Can't use the recirculation kit with HKS version 2... when the BOV is not in stock location the hose is going to be really long to recirculate it..

 

The only thing I can think of as far a "winter" gas is actually diesel fuel. There are various grades that have lower gel points. In the midwest we have to run "#1" from December through February--which is more expensive. There are also differences in application, anything running on the highway is federally mandated to use the 15ppm sulfur content fuel. Some farmers try to get away with running the 500ppm stuff that they run tractors on in their pickup trucks--but if they get caught the fines are amazingly high. Most of the modern turbo diesel trucks run like *** on the 500ppm stuff anyway so the offset in mileage doesn't balance out the savings

Here is a description:

http://p66conoco76.conocophillips.co.../3736/FAQ1.pdf

1. Grade No. 1-D S15, a special-purpose, light middle distillate fuel for use in diesel engine applications. Higher volatility than that provided by Grade No. 2-D S15 fuel. Maximum sulfur content 15 ppm.
2. Grade No. 1-D S500, a special-purpose, light middle distillate fuel for use in diesel engine applications. Higher volatility than that provided by Grade No. 2-D S15 fuel. Maximum sulfur content 500 ppm.
3. Grade No. 1-D S5000, a special-purpose, light middle distillate fuel for use in diesel engine applications. Higher volatility than that provided by Grade No. 2-D S15 fuel. Maximum sulfur content 5000 ppm.
4. Grade No. 2-D S15, a general-purpose, middle distillate fuel for use in diesel engines, especially in applications of varying speed and load. Maximum sulfur content 15 ppm.
5. Grade No. 2-D S500, a general-purpose, middle distillate fuel for use in diesel engines, especially in applications of varying speed and load. Maximum sulfur content 500 ppm.
6. Grade No. 2-D S5000, a general-purpose, middle distillate fuel for use in diesel engines, especially in applications of varying speed and load. Maximum sulfur content 5000 ppm.
7. Grade No. 4-D, a heavy distillate fuel, or a blend of distillate and residual oil, for low- and medium-speed diesel engines in applications involving predominantly constant speed and load.

 

Also, if they are changing the chemical content of the fuels for different times of year, they would have to make different MSDS labels--which after searching, I have not been able to find

Here is the p66/76/conoco MSDS site
http://w3.conocophillips.com/NetMSDS/

If you do a search with a blank field, you will get 654 results. Notice that the third choice is for Conoco Unleaded Gasoline--that MSDS is from 2003 and it is their current MSDS

 

I've heard about that setting being more agressive, dropping the powerband and whatnot. If I get some 280s i'll def give it a try

 

No two batches of gas have the same chemical makeup! WInter blend has a higher vapor pressure and usually higher O2 content, depending on where you live.

Higher vapor pressure usually implies lower density which does tend to decrease mileage. The biggest hit in winter though is the longer time your car spends in cold enrichment mode.

Dave