what version (builds) are you running?
Builds 328 and 473 for the scaner and 360 for the tuner.
01 ECSB 1/2 ton 4x4 Forged 5.7 LS1 GMC
Custom KBracing front mounted, BW S480, intercooled turbo
On my first full tank test on my Firehawk, I got close to 25mpg on a 200mi drive, going 80 where it was allowed and around 60 otherwise ... should be able to get that down a bit more... wonder how much efilive get improve that?