i tried going on other forums and they'e all screwy and not organized like this one so im gonna ask my question in here but what is the best programmer for a 2004 chevy half ton 4x4 witha 5.3 V8?? my grandpa is wanting better fuel mileage and i dont know too much for the rice burners on which is best. so any help?? thanks!!!

 

When I had my 1st Silverado (2002 model), I tried Superchips Flashpaq and the Diablo Predator.
When I took a long highway trip, I noticed I gained a good bit of MPG with the Superchips than I normally would.
With the Diablo, you can do more and see more (charts, etc) on a laptop as you're going. I didn't pay attention to better MPG on this one because I was always messing with the other settings/modes.
Since you're just curious about better mileage, I'm going to keep this short. I really don't think it's worth the money.
People say the custom tunes are better BUT I don't have time to go back and forth to the person to change settings with it.

I guess driving easy is the best way, even though that's hard sometimes.

 

haha thanks! thats what i figured nut my grandpa was wanting some info. he drives to alabama and north carolina alot so maybe the superchips would be good for him. he said he is getting 19mpg and my little ranger dont even get that

 

you may look into EFI live. I am not sure how common it is for the a gasser to be programmed with it, but i am pretty sure it can be done

 

black bear performance ftw

 

Yeah it would be interesting, but would take more skill that it would be worth most likely.

 

IMO i would do a bully dog, super chips , or hypertech. all seem to do the same on a gasser to me. after that put a throttle body spacer on it. then a thermostat that opens at a cooler temperature. after that take off the big mechanical fan and put on an electric one. ive seen large fuel mpg gains off that set up. i hope this helps

 

Ditto on the electric fans.