What power adders are you using and what has it done to your overall mileage, I know it depends on the driving style but I'm considering putting something like Radix onto my 01HD w/6.0 to avoid having to trade it in for a diesel type truck as I feel like a turtle pulling my 8500lb 5th wheel camper?? I don't do more than 2-3 trips a year and the truck is only gettin like 5k miles/year so I don't think I can justify the much higher entry price of diesel and then also gettin in all the time can be tricky where I live as they typically have only one pump and do run out on occasion...

 

I pull a 8500# 5th wheel and went from 11-12 mpg to 14-14.5 mpg towing. normal driving i gained 2 mpg city and hwy. The thing about the turbo is it love a load. I had my turbo for over a year and it works great. I can pull in overdrive all the time. Going over hills and bridges it never slows down and never kicks out of overdrive.

 

i got about 1 mpg increase in town and 2 mpg on the highway, and thats not babying it.

 

thats what i'm talking about i can't wait to get mine installed.

 

on the way back from nelson performance, my '04 sts silverado crew cab got 19.1 MPG @ 75+ miles per hour.

 

I went with 4.10's and cam, springs, and other bolt ons...

I still get around 350 to a tank 325 something like that... around about 13-14 city and 21 or so highway

 

I have a Radix and I get 1 more mpg with it then my all time best when I was stock which was 19 now is 20+ mpg

 

Currently 15.5 on the Whip'd 5.3 and I rarely shift up into OD

 

I just got about 18.3mpg out of my last tank with an STS base kit and Nelson tune. I was getting about 15-16mpg before that with a Predator modded PCM alone. Who knows what I will get once I go to 8psi though.