Ok guys what I'm needing is mpg with efi live on a 3500hd cc,drw 4x4
(I'm hopeful that others have tried this combination)
Thanks
Chuck
1. in town
2. interstate or open road (US hwys)

now total stock
1. 13 to 15
2. 17 to 18

so post your info so I can justify my time and labor to do this. Oh ya money also.:D

I dont have EFI but how can you compare mpg to a tuner that you make the program for?? Wouldnt everyone have a little differant tune?? I think I am going to get EFI, so this is just a question. Does EFI come with tunes or is it all designe yourself tunes??

correct what I'm asking is for anyone with a similar truck and running efi mpg tune
(nick has it in the library) what are their numbers.
sorry for the confusion. I hope this is better.
fire0021 had one on his truck and got great mpg but his truck is not drw or 3500
I'm trying to get a look at wat might be expected.
thanks
chuck