Just got a 07 MCS automatic (long commute and traffic) and I get from 34 to 38 mpg.

Im thinking about getting the Alta stage 2 package and curious if anyone already has it and noticed better mpg?

I know the easier air goes in and out the more horsepower and possibly better mpg right?

 

Also, may want to put the 15% pulley with the stage 2 kit. With the lighter pulley, should only affect mpg because I'll be rev'ing the mess out of it right? lol

 

At 34-38 mpg I would not be worrying about getting more out of it. I am just ecstatic with getting near 30 on my first tank of my car.

 

But, along with more air, you use more fuel. You will not get more mileage, it will be less.

 

and if its an 07 no Pully as they do not use them