ive had my volant plus the ram air tube installed for close to 2 weeks now and after completely toping off my truck the other day, and i mean topping off to the very top till the gas wont go down, ive driven 262 miles and i still have half a tank. i havent floored the truck and ive been light on the gas, i removed the spare, jack and istalled a soft tonneau cover. The only "extra" weight it has is the box with speakers. im stoked cause i used to get 275 miles to a tank on my old 04lightning and i used to top it off the same way.

 

me and the wife drove my screw to the mountains last weekend and i got 16.3 i didn't think that was to bad with the 23's on it

 

I just did mine, and got a rough estimate of around 13-14 mpg. This is with a bad exhaust system too, which im sure is robbing me of some mpg/power

 

335 miles and still have just under 1/4 tank left. driving like an old lady