chip install better mpg???? fake?

[waywoos]

anyone know if the chips that say they give more power and better mpg really work?

 

[JTX]

They may imporve it a little but remember most chips also require 91 octane.

 

[aldive]

Depending on the year of your truck and the tuner, yes, chips or preferably computer flashs do indeed increase mileage.