Well I took a 720 mile roundtrip on tuesday and have made some observations which i'm sure we all know to be true but i've put together my plan on increasing my mpgs
well to start off my favorite average highway speed is about 80mph and the rpm is about 2100 and the truck gets about 13.8-14.8mpgs on the highway depending on how consistent the speed is. well I filled up and reset the avg mpg and drove 180miles at or around 70mph where my rpm was lower than the 2k and my mpg come back at 16.8.
I know John G posted up mpg are based on aerodynamic drag at mph and rpms the motor is turning. which I know to be true.
So the way i plan to fix this issue is to install a gear Vendor overdrive unit on the back on the tranny http://www.gearvendors.com/
it will give me a final gear of .55 which will drop my 80mph rpms to 1600rpms which I'm sure will be worth a couple of mpg's beside that it will prolong the life of my tranny and engine. also its nice to have the gear splitting ability for towing big loads.
I also decided instead of cutting my factory driveshaft b/c the gear vendor is usable on any vehicle all thats needed is a different adapter. I going to have mark @ PST http://www.pstds.com/
who built the carbon fiber drive shaft for my harley truck to build me a carbon drive shaft for the superduty which will be alot lighter, stronger, and be better balanced. on my harley truck I drop 50lbs and picked up 15hp and 25tq with the swap. I'm not sure what will be gained but if I want to sell the truck i don't want to give away the goodies.
lastly I will do the dpf delete and tune probably by matt @ Spartan
but thats not first on my list I enjoy the truck the way it is for now.
I might put the job2 valence back on to pick up an extra .5 or so
so here's the possible mpg gain break down
gear vendor 2-4 or ? mpg depending on speed
dpf delete and tune about 2mpgs
job 2 valence .5
so any where from 4.5mpg to 6.5mpg gain depending on speed and driving style.
ALL and ALL ford needs a 6 Speed Auto Tranny !!!
please post thoughts and ideas !!!