11-12 mpg mods in sig.

 

i get 13 if i floor it every were (usually driven haha) and i get 14 if im light on the pedal, mostly city and hilly back roads with my bed full of junk

 

95% city driving I get 12.

318 V8 auto, 31" tires on 3:55 gears

 

I get about 9mpg 99% city.I think alot of mine is because I don't drive far enough for it too warm up. truck is all stock but i do have the air gap and a CAI kit.It could also be that i have the 2500

 

one highway, zero city.

when i got it i had 11.5. after plenum, kegger, and superchips i get 12.5

 

The average so far is like 12.

 

8.6 running 33" mudders and 3.55 with a cold air intake and superchips set on tow.

Now If I have my 30" on there 14-18 all day long.

 

back in the day when the truck top notch,,,i was getting 15mpg(summer) in town

when i frist got the truck(winter getting 8,, but the stock box fliter has engought dift to fill a sand box)

the best i got was 16,,,,, before i parked it to be tron down 10mpg

 

On my old 96 4X2, I could get 16 without even trying.

Something else I've been wondering: what brand of gas do your trucks run best on?

 

I use Super america here which i think is the same as tom thumb down south which is the same as citgo everywhere else lol...

Citgo