SO guy's I'm in my second summer with my stroked 5.7 in my Duster (carb)--I'm so impressed so far with the mpg without the efi,So I wanted to know what your getting for mpg???? - I use 112 rocket in mine and last night going to Mopar's under the lights it was 84 miles round trip and I used 5 gals. total,Which comes out to around 16 mpg and yes i was on the throttle at a few intersections (he he) my build is 06 5.7-callies stroked crank,diamond pistons,stage 4 head porting,tti headers into 3in crossover exhaust with 3in cut-outs,my displacement is 400 ci and a custom comp cam--What are u gut's getting with efi or carb????? Steve