i myself get 300 per tank also, someone told me evos run rich and when their tuned this changes hence better mpg is this true?

 

yeah before my tune i was ave. 18 to 20 mpg, since my mail in i get 20 -23, depending on how much highway to city

 

Guys, how about citing MPG and not miles per tank? The latter is somewhat meaningless.

 

the most miles out of a tank were 263 with regular boltons

 

In regards to the crummy MPG some people seem to experience a malfunctioning EGR valve will also kill off your gas mileage.

I think all evos should see around 19mpg mark with normal driving habits.

 

Yes, wingless should give you better gas milage. As i understand, the Evo is a wing, not a spoiler, thus it is creating an aerodynamic force and not just reshaping the exit flow. Thus the wing is creating drag, not parasite drag from an actually physical item being there, but induced drag due to the creation of an aerodymanic force. Anytime you create lift (or downforce in this case) you are creating drag, just the fundamentals of fluid mechanics. Induced drag can be a much larger force than parasite drag. So if you delete the wing, you get less drag, and less drag is a BIG factor when talking mpg, especially in a car that has as many sharp angles as this.

 

Usually I go 240-250 with normal driving[/QUOTE]


what is this "normal driving" you speak of?
LOL

 

Here is an interesting fact....
Did you know that an F1 racecar produces enough downforce at 120mph that it could drive upside down without falling.

 

I remember reading that the Saleen S7 can do that too.

 

Wow off topic, but yes, the Evo wing is there for downforce, however downforce gives drag because it gets in the way off the air TO direct it. That is why the Veyron has to have the wing DOWN to get to 252 MPH as the drag aspect is less beneficial than to have the downforce.

In effect on the Evo, unless your consistently being at 125 mph through corners, it will save you money in gas by getting rid of it.