At today's prices (assuming I will get 16 mpg and driving what I do every month), the difference in fuel cost between 87 & 93 is about $50 month
it's a give and take.
I have several times gotten over 17 with 87 tune.
you know what they say, you get either smiles or gallon or miles a gallon.
Originally Posted by kjeeper10
Love 93 tune.
Looking at the big picture it's not really that much more per fill up.
Helps move my 35's and mileage seemed to stay the same (14-16)