Originally Posted by DrewX5

Yes, I am interested in this mod.
Is this a DIY project. How much, and where can I buy? 60miles extra per tank his huge...net savings of $11 if you fill the tank up with premium.

If the x5 gives 15mpg than that equates to 4 gallons of saving x $2.75/gallon for grand total of $11.00

Hard to believe that this little contraption would save you this much money. I am definately willing to experiment.