can it change the over head milige 8 to 10 more mpg.or would it be telling a lie and not be that much.in the real world

 

lie, i highly doubt any box (or anything for that matter) will get that much gain in milage

 

thanks horsehauler just

 

My Xzillaraider & previous Edge EZ both exaggerated the overhead depending on the setting. I believe it's the current nature of add on fueling boxes. From my testing of the Xzillaraider (race) I'd say it adds on the average of 1.5 mpg improvement over stock.

 

On the beta version (std version)I had on level 2 it improved milage by 1.5 hand calc and the overhead had the same accuracy as before

 

your fuel mileage is inaccurate because the fuel box provides extra fuel pressure....a duration box all by itself will not affect the overhead mpg readings..nothing you can do about it...but you are definately not getting 8-10 mpg better fuel economy

 

my truck has always had inaccurate overhead mpg... much lower typically than what my fillups calculate each time.... stock truck except for the muffler removal... well, for a few more days anyway

 

there is a TSB that fixes the overhead computers innaccuracies....i think it is #18-037-007...fixes a few other gliches too..

 

yea, but if a fueling box hooks up to the rail pressure sender, then the overhead cannot be trusted because the box is forcing higher rail pressure than the ECM thinks is being used.