Gas Milage

[sack1]

what after market products have you guys used that have actually worked to improve your mileage

 

Toyota Corolla

 

 

 

Let's ramp it up slightly, a Honda Civic Si!

 

Seriously, I don't believe there's a magic bullet out there. If you're using an HD truck the most gains to be had are to park it until you really need it.

[patfan37]

I installed a Banks Ram Air on my Duramax, I heard from a few people if you install a tuner and exhaust system too, you will maybe get almost 20mpg. This true?

[duradave]

best way I've found to get good milage is to just lie about it.