edge compbox
 

Ive got an edge comp box on my truck the 5x5 and im wondering what level is best to get good fuel mileage on the highway? what level should i set my boost? how much boost is too much? does boost affect fuel mileage?

My buddy is running my comp on his truck (My tranny wont hold the comp & smarty stack) and he runs 2x3 and get 22-23mpg all the time, towing and in town. But, that is also with Smarty on 8 and RV275 injectors, plus the intake/exhaust. From reading on this site, i have seen that 30-35psi is max for the stock HY35 (if you have an automatic)

On a side note, if you are running a stock auto, watch that you arent slipping it all the time with the comp on 5x5, it is a wicked box and has no safety shut off/defueling