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Josh27, Very cool... Your getting amazing fuel economy already! I haven't slowed down and set the cruise at 55mph to see what this truck does at that speed. I will have to give it a try. You have some very large tires on your truck! What speed are you going in 5th gear at 2k rpm? What tire pressures are you running? Oh, and welcome to the forum!
Each day this week I have jumped in the truck and took it for about a 36 mile loop trying to get the injector cleaner and engine cleaner through the system. I am primarily working on the maint items on the truck at the moment. I will be replacing the plugs, and cleaning the MAF and Throttle body soon. I am considering a bump in tire pressures. The tire max psi is 50 on these tires and that is where I have them, I am considering bumping them to 52 or 55 psi. Also unrelated to the fuel economy I have a full plate of projects that I have to fix or replace on the truck. Just part of the buying a used vehicle experience I guess... I always factor in that I will have to spend some money getting whatever I buy fixed and the way I want it. So those projects are under way also...
Yesterday I finally went out and calibrated my Ultragauge to this truck. It turns out my math calculations were off. I had estimated a difference between the speedo and the actual speed according to the GPS and I was off. So I have been using a factor of 1.0833 for the multiplier to get a number for the miles travelled due to the size of the tires. Well yesterday I used the odometer output from the app on my phone using the GPS and it turns out the factor is a little over 1.11. So my calculations were a little off. So that would mean that last tank of mixed driving would have been about 25.44 mpg. Around town the truck likes to suck the fuel fast! So it took me a few runs to dial in that number so that it is somewhat close and the Ultragauge shows the correct speed and distance in the trip. That will make is a lot easier now to get a read on what is going on now that the gauge is reflecting more true to life numbers. Now I just have to learn how to drive this thing!
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